>So, should one screen immigrants and only allow queer flag waving liberal progressives from SF in, or what is exactly your point?

You're exaggerating, but in essence, yes. If you don't align with western values, please keep away.

> Isn't all of this stuff verging on thought policing?

Plenty of countries choose immigrants based on a multitude of factors. You can't even fly to the US as a visitor if you're deemed unfit.