because over the last Decade, we have had uncontrolled Immigration, (legal and illegal). Too many, too fast.
See, that's more or less exactly what Powell was saying. And it's clear 40 years on that he was wrong. How do we know such claims are any more true today?
We now have certain religious groups, (minority) calling for a takeover of this country.
There are always minority crackpots calling for extreme measures. Take the Black Panthers or Nation of Islam, for instance.
Overall, there's now a deep resentment of immigrants,
Again, nothing new. Except that the specific immigrant ethnicity has changed. It's previously been Irish, or Jews or...