There's a really good quote in Terry Pratchett's Jingo about just that, let me see if I can dig it up.
How the Moderate Person on fb thinks:
ďIt was much better to imagine men in some smokey room somewhere, made mad and cynical by privilege and power, plotting over brandy. You had to cling to this sort of image, because if you didnít then you might have to face the fact that bad things happened because ordinary people, the kind who brushed the dog and told the children bed time stories, were capable of then going out and doing horrible things to other ordinary people. It was so much easier to blame it on Them. It was bleakly depressing to think that They were Us. If it was Them, then nothing was anyoneís fault. If it was Us, then what did that make Me? After all, Iím one of Us. I must be. Iíve certainly never thought of myself as one of Them. No one ever thinks of themselves as one of Them. Weíre always one of Us. Itís Them that do the bad things."
Fuckin' love me some Terry Pratchett.
In any case, it's hard to convince people who refuse to see that sometimes they act racist because they don't think they're racist, and get all offended and then #AllLivesMatter and "not all men." Discouraging.