I think the main one was "they (immigrants) took our jobs" (whereas I would argue USA was as successful as it was for as long as it was due to how long they benefited from influx of smart, hard-working immigrants who were willing to work for less than "born Americans").

The other ones about "non-whites are criminals", "marriage is a union between a man and a woman", "let me have my gun or I'll shoot you with it", "transgender people don't belong in sports" and similar, were mostly sideshow to stir the pot, but it was obvious people had to be careful before Trump not to get "cancelled" for some of those views, especially if they were in any somewhat public position (like an executive of a public company). And yes, today this seems to continue to happen in the other direction, but due to tribe mentality, one side is probably enjoying that today even if it's not really fair either.

Again, this is just looking from the sidelines somewhere in the non-EU part of Europe. And don't for a moment think I believe we've got it better over here: it's really much worse instead (we've had our Trump-like president in power for over 12 years now).