After World War II and decolonization, the media and universities guilt tripped them, saying that if they opposed Third World immigrants it meant that Hitler had won!
It's actually the one silver lining for the countries behind the Iron Curtain, that they didn't have to deal with this.
“After World War II and decolonization, the media and universities guilt tripped them, saying that if they opposed Third World immigrants it meant that Hitler had won!”
I agree, that does seem to be the case.