and they can't recognize they're falling into a trap because "well I'm not the sort of person who'd support something like that!"

Well, there's the problem.

These people KNOW they'd fall into the trap- hell, you ask them they'll flat-out say "yes, they are a racist- but it's not their fault, honest. It's not them that hates people of the other race, it's the original sin of being born [majority] that MAKES them hate people of the other race, and it's so insidious literally every other person of their race is a cartoonish Klan member. Why, the fact they ONLY hate this race the very small amount they do makes them still a good person by default; no, they're the most heroic person of their race in all of human existence for only hating the race that little and fighting as hard as humanly possible, only for the inescapable fate foretold by the stars in the sky of being born [majority] forcing them to hate people of this race this little bit!"

These people know damn well they're racist POSes. They just tell everyone else you're WORSE than them.