The UK Prime Minister and US President have reacted to the London Bridge terrorist attacks:

June 4, 2017
LONDON — The death toll rose to seven Sunday, following the latest terrorist attack to strike Britain, with Prime Minister Theresa May blaming the “evil ideology of Islamist extremism” and vowing to conduct a review of the nation’s counterterrorism laws.
London Metropolitan Police Commissioner Cressida Dick confirmed that seven people were killed in Saturday night’s incident that saw a van mow down pedestrians on London Bridge before the vehicle’s occupants got out and started stabbing patrons of nearby bars and restaurants. That toll does not include the three attackers, who were fatally shot by officers within eight minutes of the first emergency call, Dick said.
London Ambulance Service earlier said it had taken “at least 48 patients to five hospitals across London.” …
May, who is running for another term in this week’s general election, said the nation needs to step up its fight against radical ideologies in response, asserting that there is “far too much tolerance for extremism in our country.”
“Things need to change,” May said Sunday, speaking outside of the prime minister’s residence at 10 Downing Street. https://www.washingtonpost.com/world/follow-up-on-london-bridge-attack/2017/06/04/5216bbb2-48c5-11e7-8de1-cec59a9bf4b1_story.html?utm_term=.ba05b4ac90a8
June 4, 2017
The White House said late Saturday that President Donald Trump offered America’s “full support” in investigating the “brutal terror attacks” in London during a telephone call with British Prime Minister Theresa May.
The U.S. State Department said it “condemns the cowardly attacks targeting innocent civilians in London.” The statement continued, “We understand UK police are currently treating these as terrorist incidents. The United States stands ready to provide any assistance authorities in the United Kingdom may request.” …
President Trump also tweeted that the attacks emphasized the correctness of his strict policies on immigration. Other users of social media, both in the U.S. and in Britain, criticized Trump. https://www.voanews.com/a/terror-attack-london-death-toll/3886089.html
June 4, 2017

President Donald Trump took to Twitter early Sunday morning to respond to the terror attacks that killed seven people and wounded dozens more in the heart of London late Saturday night.
“We must stop being politically correct and get down to the business of security for our people. If we don’t get smart it will only get worse,” Trump wrote.
“At least 7 dead and 48 wounded in terror attack and Mayor of London says there is ‘no reason to be alarmed!'”
London’s mayor, Sadiq Khan, urged Londonders not to be alarmed by the increased police presence across the city following the attack. He released a video statement on Sunday morning asking that the city “remain calm and vigilant in the days ahead.”
“We will never be cowed by terrorism,” he said, calling the attackers “barbaric cowards.”
Trump tweeted a third time on Sunday morning: “Do you notice we are not having a gun debate right now?” He wrote. “That’s because they used knives and a truck!” http://www.businessinsider.com/trump-responds-to-london-terror-attacks-2017-6
June 4, 2017
London Bridge attack: 12 arrested in Barking as death toll rises to seven …
Salahudee Jayabdeen, 40, said one of the suspected attackers had been forcibly removed from a local mosque called Jabir Bin Zyad after questioning the Imam during a service. https://www.theguardian.com/uk-news/live/2017/jun/03/london-bridge-closed-after-serious-police-incident-live

So, what needs to change?

Is it simply language about political correctness?

No.

Is it simply taking the threat of Islamic extremism more seriously?

No.

Why?

Because those proposals are not getting to the real cause of terrorism. The real cause is one that the top political leaders in the UK and USA will not now acknowledge.

Notice the following from my article Why Terrorism? Is Terrorism Prophesied?:

The Bible clearly prophesies terrorism. Notice some of those prophecies:
5 They have corrupted themselves; They are not His children, Because of their blemish: A perverse and crooked generation. … 25 The sword shall destroy outside; There shall be terror within (Deuteronomy 32:5,25)
12 “Cry and wail, son of man; For it will be against My people, Against all the princes of Israel. Terrors including the sword will be against My people; Therefore strike your thigh. (Ezekiel 21:12)
25 Because you disdained all my counsel, And would have none of my rebuke, 26 I also will laugh at your calamity; I will mock when your terror comes, 27 When your terror comes like a storm, And your destruction comes like a whirlwind, When distress and anguish come upon you. (Proverbs 1:25-27)
5 Also they are afraid of height, And of terrors in the way (Ecclesiastes 12:5).
6 You have forsaken Me,” says the Lord,
“You have gone backward.
Therefore I will stretch out My hand against you and destroy you;
I am weary of relenting!
7 And I will winnow them with a winnowing fan in the gates of the land;
I will bereave them of children;
I will destroy My people,
Since they do not return from their ways.
8 Their widows will be increased to Me more than the sand of the seas;
I will bring against them,
Against the mother of the young men,
A plunderer at noonday;
I will cause anguish and terror to fall on them suddenly. (Jeremiah 15:6-8)
While many political, media, and other leaders refuse to believe the Bible, the reality is that those of us who believe the Bible realize that terrorism is prophesied.
Terror will hit not only the USA and its Anglo-Saxon descended allies, but also many in Europe and elsewhere.

Terrorism was to hit a perverse and crooked generation. The top leaders in the UK and USA have endorsed various forms of perversity for this generation.

Notice also the following from my article Why Terrorism? Is Terrorism Prophesied?:

The Bible indicates that terrorism can happen as the result of disobedience:
12 Behold, these are the ungodly,Who are always at ease; They increase in riches…19 Oh, how they are brought to desolation, as in a moment! They are utterly consumed with terrors. (Psalms 73:12,19)
10 You have forgotten God your Savior; you have not remembered the Rock, your fortress. Therefore, though you set out the finest plants and plant imported vines, 11 though on the day you set them out, you make them grow, and on the morning when you plant them, you bring them to bud, yet the harvest will be as nothing in the day of disease and incurable pain.
12 Oh, the raging of many nations–they rage like the raging sea! Oh, the uproar of the peoples–they roar like the roaring of great waters! 13 Although the peoples roar like the roar of surging waters,when he rebukes them they flee far away, driven before the wind like chaff on the hills, like tumbleweed before a gale. 14 In the evening, sudden terror! Before the morning, they are gone! This is the portion of those who loot us, the lot of those who plunder us. (Isaiah 17:10-14, NIV)
14 ‘But if you do not obey Me, and do not observe all these commandments, 15 and if you despise My statutes, or if your soul abhors My judgments, so that you do not perform all My commandments, but break My covenant, 16 I also will do this to you: I will even appoint terror over you, wasting disease and fever which shall consume the eyes and cause sorrow of heart. And you shall sow your seed in vain, for your enemies shall eat it. 17 I will set My face against you, and you shall be defeated by your enemies. Those who hate you shall reign over you, and you shall flee when no one pursues you. (Leviticus 26:14-17)
More and more in the USA and its Anglo-Saxon descended allies (UK, Canada, Australia, and New Zealand) will not observe God’s commandments and more and more legal decisions are contrary to, and basically despise His statutes (the LGBTQ agenda, including transgender actions, come to immediate mind). No one should be surprised that the USA and UK have experienced terrorism–and as I have written for years, more will come. Consider also the following:
18 For the wrath of God is revealed from heaven against all ungodliness and unrighteousness of men, who suppress the truth in unrighteousness, 19 because what may be known of God is manifest in them, for God has shown it to them. 20 For since the creation of the world His invisible attributes are clearly seen, being understood by the things that are made, even His eternal power and Godhead, so that they are without excuse, 21 because, although they knew God, they did not glorify Him as God, nor were thankful, but became futile in their thoughts, and their foolish hearts were darkened. 22 Professing to be wise, they became fools, 23 and changed the glory of the incorruptible God into an image made like corruptible man — and birds and four-footed animals and creeping things.
24 Therefore God also gave them up to uncleanness, in the lusts of their hearts, to dishonor their bodies among themselves, 25 who exchanged the truth of God for the lie, and worshiped and served the creature rather than the Creator, who is blessed forever. Amen.
26 For this reason God gave them up to vile passions. For even their women exchanged the natural use for what is against nature. 27 Likewise also the men, leaving the natural use of the woman, burned in their lust for one another, men with men committing what is shameful, and receiving in themselves the penalty of their error which was due.
28 And even as they did not like to retain God in their knowledge, God gave them over to a debased mind, to do those things which are not fitting; 29 being filled with all unrighteousness, sexual immorality, wickedness, covetousness, maliciousness; full of envy, murder, strife, deceit, evil-mindedness; they are whisperers, 30 backbiters, haters of God, violent, proud, boasters, inventors of evil things, disobedient to parents, 31 undiscerning, untrustworthy, unloving, unforgiving, unmerciful; 32 who, knowing the righteous judgment of God, that those who practice such things are deserving of death, not only do the same but also approve of those who practice them. (Romans 1:18-32)
Many in the USA ands its allies either are involved in practices that the Bible condemns or condone one or more behaviors that the Bible says not to approve of.
Do not look for political leaders to truly reverse it. Instead, many politicians (including nearly all on the Democratic party side in the USA) either want to keep the ‘gains’ of the LGBT community or want to push for more ‘gains’ that are contrary to God’s statutes and commandments.
Although national repentance is not likely, personal repentance is. God does have a plan of protection from the Great Tribulation for those who are Philadelphian Christians in the 21st century (Revelation 3:7-13; see also There is a Place of Safety for the Philadelphians. Why it May Be Petra).
The murders and techniques used by terrorists are brutal and mean, and also tend to display a form of cowardice. The Apostle Paul was inspired to warn that such behaviors were prophesied:
1 But know this, that in the last days perilous times will come: 2 For men will be lovers of themselves, lovers of money, boasters, proud, blasphemers, disobedient to parents, unthankful, unholy, 3 unloving, unforgiving, slanderers, without self-control, brutal, despisers of good, 4 traitors, headstrong, haughty, lovers of pleasure rather than lovers of God, 5 having a form of godliness but denying its power. And from such people turn away! (2 Timothy 3:1-5)
Many terrorists claim to have a form of godliness, but do not believe in the God of the Bible. Their brutality is hurting them with the vast majority of nations around the world, including predominantly Islamic ones.

It is not just the UK and USA, of course, that are affected.

Notice something that happened in Italy last night:

June 4, 2017
About 1,500 people were injured in the Italian city of Turin after a firecracker provoked a stampede on Saturday night, police say.
Thousands of football fans were watching a live relay of Juventus’ Champions League final against Real Madrid in Cardiff when a bang was heard and rumours of an explosion spread.
At least seven people, including a seven-year-old child, were seriously hurt, local media say. http://www.bbc.com/news/world-europe-40147813

Why would people panic and stampede because of a firecracker?

Well, the logical reason would be that they suspected terrorism. At risk of redundancy, notice again the following from the Bible:

14 ‘But if you do not obey Me, and do not observe all these commandments, 15 and if you despise My statutes, or if your soul abhors My judgments, so that you do not perform all My commandments, but break My covenant, 16 I also will do this to you: I will even appoint terror over you, wasting disease and fever which shall consume the eyes and cause sorrow of heart. And you shall sow your seed in vain, for your enemies shall eat it. 17 I will set My face against you, and you shall be defeated by your enemies. Those who hate you shall reign over you, and you shall flee when no one pursues you. (Leviticus 26:14-17)

Thousands were fleeing when no one was pursuing them in Italy.

Notice the following from the old Worldwide Church of God as well as some of my comments in the article Why Terrorism? Is Terrorism Prophesied?:

TERRORISM the Worst Is Yet to Come!
Suicide bombers threaten mayhem in the Middle East. And experts now warn about “state-supported terrorism.” Where is it all headed? …
Terrorist groups survive despite governmental pressures in much the same way as a troubled business survives in spite of economic difficulties. To “stay in business,” terrorist groups have, in the past, robbed banks, kidnapped, extorted, even dealt in drugs or other contraband materials. But “local fund-raising” has proven unreliable for some groups. As a result, they have opted for another, more ominous way of augmenting their budgets: seeking out powerful sponsors to provide safe havens, training, weapons and money. In some cases these sponsors have proven to be national governments — leading to what is now called “state-supported terrorism.” Terrorists have become the means by which some powerful nations, desiring to avoid unwanted escalation or public outcry, can punish their enemies at a relatively small cost. …
State sponsorship has presented a dangerous new face of terrorism. For one thing, the level of weaponry employed has advanced greatly. Crude pipe bombs have been replaced by sophisticated remote-fired car bombs. Molotov cocktails are out; rocket-propelled grenades are in. But greater levels of finances and weaponry are not the only changes that have come on the scene. Targets have changed also. …
Terrorism Will Be Stopped
The immediate future does not look bright for those battling against terrorism. And as the world’s level of frustration rises, an America that has seemed nearly impervious to terrorism may begin to suffer along with the rest of the world. … This recent historic period was not unlike the situation in Beirut today — and not unlike a time described by the apostle Paul 1,900 years ago: “But mark this: There will be terrible times in the last days. People will be lovers of themselves… boastful, proud, abusive… unholy, without love, unforgiving, slanderous, without self-control, brutal, not lovers of the good, treacherous, rash…” (II Tim. 3:1-4, New International Version).
Jesus Christ himself prophesied (see the account in Matthew 24:7-8) that at the time of the end, “nation shall rise against nation, and kingdom against kingdom…. All these are the beginning of sorrows.” This is what we have today. One nation sponsoring bloody terrorist attacks on another. The governments under assault today are often powerless to stop this deadly scourge. The world must, instead, look elsewhere for a way out of this madness. More killings, more bombings, more sorrows are on the horizon. But there is a government on its way that will deal with terrorism in a firm manner. The kingdom of God will save mankind from men willing to go to any length — whether by war or terrorism — to achieve their means.
The coming Messiah “will judge between the nations and will settle disputes for many peoples. They will beat their swords into plowshares and their spears into pruning hooks. Nation will not take up sword against nation, nor will they train for war anymore” (Isa. 2:4, NIV). (Taylor D. TERRORISM the Worst Is Yet to Come! Plain Truth, May 1984)
God does have a plan to fix terrorism, but the politicians do not know what it is. The plan is the replacement of the governments of this world with the Kingdom of God:
15 Then the seventh angel sounded: And there were loud voices in heaven, saying, “The kingdoms of this world have become the kingdoms of our Lord and of His Christ, and He shall reign forever and ever!” (Revelation 11:15)
This is something that politicians around the world neither believe nor advocate. Until then, we in the Continuing Church of God will work to help fulfill the following:
14 And this gospel of the kingdom will be preached in all the world as a witness to all the nations, and then the end will come. (Matthew 24:14)
The Kingdom of God will be the solution to terrorism. God will fix this. That is part of the good news, the Gospel of the Kingdom of God.
Islam and other religions that oppose the truth will be eliminated.