It's always been immigration, people. I've been saying it for years. Everyone, even the most liberal, has a breaking point when it comes to how much immigration they can tolerate before they feel like they are losing their way of life. And the amount of people who would migrate to the developed world if they could is basically unlimited, which ensures that every non-restrictive immigration program will eventually be overwhelmed.
I don't hate immigrants, I love and respect them and I reject the racist narratives of the right. But every country needs to have reasonable restrictions on immigration-especially illegal immigration- or eventually the people will radicalize against immigrants. You can say that's unfair but it's just the facts. Source: every nation that has ever experienced immigration waves.