For Americans, IMO, it just started with Obama becoming President. We won't know the whole story of what he did, and how he will be remembered, but, on November of 2008; when Obama won the election, that shyt started 'It' for me. Racism, yeah, but also a big siren that screamed, "Your President is BLACK. The most POWERFUL man in America, isn't White."
And I think that shyt broke people, finding an excuse like, "Obama isn't American, so he ain't legal..." which also at the same time, had Republicans allowing people like Sarah Palin to bring in misinformation in order to win the election.
I believe, in my opinion, this is like when Fentanyl was introduced, and now it's gotten so out of control that people are willing for American to be destroyed, because they can never get THEIR ideal life back, which is it's own cluster.