I think that's just the inherent nature of voting for a candidate in a largely two-party system. On some level, it does "force" you into situations where someone will at some point say "eh, I guess I'll overlook that", no matter how terrible it is. Isn't that the argument that's used every time a 3rd party candidate is brought up?
some antiwar people vote for pro-war Democrats who routinely bomb other countries
some pro-choice people vote for a sexist Republican party
some people who support gay rights vote for a routinely homophobic Republican party
some anti-capitalists vote for pro-corporate Democrats
Democrats had one of the most popular proponents of stop and frisk front and center at their convention, while also having
mothers of those slain by police violence on stage
Of course a lot of them didn't care about Trump's racism, because America being a white supremacist country allows them to not have to care. And while for a lot of us, his blatant racism/sexism
should an obvious dealbreaker on a gut level, they're just using the same logic to overlook things the same way that everyone else does in favor of their preferred major party candidate. When you're forced to pick between only two people, the rationalizations start flying:
"he's just trolling"
"he doesn't really mean it"
"it's just PC culture out of control"
It's all BS, but it's the same BS that all human beings are prone to, and not something unique to Trump voters. Recognizing that is important, I think. And I'm not saying that the individual rationalizations are equivalent in all cases, but that the psychological motivation behind it is the same.