Liberal polices are reaping the whirlwind because they forced their agenda using unfair arguments

Sohrab Ahmari:

Donald Trump’s proposed border fence and his order to suspend all immigration from terror-producing countries are dramatic and consequential. But they’re also palliative symbols. The message: Your days of anxiety are behind you. We will be a coherent nation once more.

Politicians across the West are saying the same thing in what is shaping up to be the widest rollback of the freedom of movement in decades.
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The irony is that freedom of movement is unraveling because liberals won central debates—about Islamism, social cohesion and nationalism. Rather than give any ground, they accused opponents of being phobic and reactionary. Now liberals are reaping the rewards of those underhanded victories.

Liberals refused to acknowledge the link between Islamist ideology and terrorism. For eight years under President Obama, the U.S. government refused even to say “Islamism,” claiming ludicrously that U.S. service members were going to war against “violent extremism.” Voters could read and hear about jihadists offering up their actions to Allah before opening automatic fire on shoppers and blasphemous cartoonists.
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The left also largely “won” the debate over Muslim integration. For too many liberals, every Islamist atrocity was cause to fret about an “Islamophobic” backlash. When a jihadist would go boom somewhere, pre-emptive hashtags expressing solidarity with threatened Muslims were never far behind.

But liberals don’t bother nearly as much about the pathologies in Muslim communities, and in Islamic civilization itself, that were producing so much carnage. Some would sooner abandon their own feminist and gay-rights orthodoxies than criticize what imams in Paris and London suburbs were telling their congregations.
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There is much more.

By pushing the phony disease of "Islamaphobia" as a means of shutting down serious criticism of the actions of Islamist, they trapped themselves into this result.  It is not the first time they have been losing battles by trying to shut down debate.  Their positions on "climate change" has also led to them losing the debate because they refuse to debate those skeptical of their theory.