What happened to Jews to caused them to be treated as trash?

Hitler spread racist propaganda for no reason, he just needed a race / religion to blame for Germany's problems at the time (even though these claims weren't true).

Presbyterian churches are teaching that their Jewish neighbors are inherently racist and prone to abusing the rights of others.

the only answer is the differentiation in the human mind right now. the main reason is racism, color and the people mindset to think jews as inferior.