Race has nothing to do with black people being armed robbers though. Trump has been de-humanizing critics and various other groups since at least his candidacy announcement, and that has enabled (if not encouraged) more troubled members of the conservative movement to act on that.
Not all conservatives are going to take him at his word, but the fact that the rest of the Republican Party are not calling him out on his frankly dangerous rhetoric makes them complicit in what he says and by extension what it causes to happen.
Fakeedit: and by Republican Party I mean national politicians; senators, representatives, etc.
Yep. This. If someone's actively choosing to be part of an ideology currently controlled by a man who's called his political opponents traitors and foreign immigrants criminal rapist drug dealers (etc.), advocated violence against the media ("I'll pay fees", remember?) and equivocated neo-Nazis with the people protesting them among many other things -- and is still overwhelmingly popular among members of his party even now that the bodies are starting to pile up at the hands of people who are also identifying as conservatives and is still pitching demonstrably dangerous rhetoric to huge, cheering crowds of conservatives, if they're still saying "yep, I'm with them" after all that, then what else are we to make of their continued membership in that group other than, at the very least, being on some level accepting of what's happening?
What are they supposed to do? Every election cycle is inundated with people screaming about how a third party vote is throwing your vote away, and the entire conservative news cycle tries it's damndest to demonize every Democratic candidate they can. You could say that they have a moral imperative to vote Democrat or join a third party, but almost all of them are going to think that it's easier to change the Republican Party from the inside (kind of like how left-leaning democrats want to vote Democrat - not because it's the option in line with their beliefs - but because they want to bring the party further left and that's easier than forming their own party).
Let me put this into perspective, and get a little more specific, I guess.
I go to one of the better universities in GA, and I was a member of the College Republicans with a friend of mine (him for a few years me for a few months, cause I had just transferred in). Now, about 90% of us (about 300 people) were "NeverTrump," all supporting other third party candidates. After Trump won, there was basically a Night of Long Knives situation from the national level down to our little organization. Basically, noone was allowed to hold a leadership position if they were against Trump during the election. Naturally, this meant the leadership council for the CRs is now full of dipshits.
We're biding our time until we can get the dipshits out of power, basically.