Why did some people tolerate the Holocaust?

Hitler has been named one of the greatest speakers of all time, he had charisma, determination that Germany would prevail and overcome and the skills to bring the excited Germans to the forefront of the super Aryan race he visualized. He wanted a super race of Germans, all Jews exterminated. It was not until the last minute when the allies were appoaching that he realized he had lost,it all, and,in his bunker, shot himself and his dog, with mistress Eva Braun taking poison. This is what led to the expression that "even Hitler loved his dog." Hardly Words to describe him. An intelligent psychopath with a vision of a planet inhabited by pure Aayran stock.