Maybe those racists should have gotten together, forget their minor differences, and commit even more atrocious acts since folks these days think they were all baddies (and white, the worst thing of them all!) anyway. The wars they fought were completely pointless.
If only there was someone to tell them that all whites are really the same, so they would have understood. Well, Hitler had some ideas of unity close to that (with idiotic things like excluding "those stupid eastern slavs"). Modern racists see nothing but the skin colour, they don't even bother measuring your skull. That's how bad things have gotten.
They tried to do that, look up Nazism in the Americas - fortunately the white supremacists were very much in the minority in the US.
Modern racists operate pretty much the same way as 100+ years ago
Wouldn't say that racists were in the minority. Hitler starting several wars turned them off from fascism, in Britain as well, but regular old racism and white supremacy was strong.