From my perspective, there are people like this in every generation. People who knew Muslims were evil and must be slaughtered; God said so! People who knew that Jews were genetically inferior, and must be cleared away for the master race. People who totally supported women, as long as they stayed in the kitchen and didn't make silly demands to vote, own property or have a say in who they had sex with. People who knew that blacks were just naturally shiftless, and were not suited for many jobs. Sure, let them plant crops, but don't let them get above their station; we'll even give them their own bathrooms! People who knew that gays were all child-assaulting perverts, just waiting to get their hands on your 8 year old.
And fortunately, when you look at history, those people always fail in the long run.