One of the most disgusting pieces of trash ever to live. Nazi piece of garbage.
Nietzsche died in 1900. He wasn't even alive when the German Worker's Party formed (soon to become the NSDAP, the nazi party).
...general contempt of human beings that weren't Nietzsche made him a very horrible person.
This is a superficial reading of Nietzsche. His contempt boiled more down to the concepts, and ghosts people latch onto, a sort of traditionalism that he saw as limiting man. His philosophy had more to do with how to uplift mankind, not as a basis to despise. That's not to say he didn't vehemently dislike much of the western world's glorification of a "slave mentality", as he called it, but in the end, to undo the damage he saw that keeps man down.