Read their religious text, the Talmud. It instructs jews to do the most awful things imaginable to children and non jews, aka "goyim" which is what they call us. It's Hebrew for "subhumans".
I'm serious. Look up some things the Talmud says. It'll probably be hard to find on google but it's out there
Here are some examples: (these are some lesser and more tame examples btw, there are far worse things mentioned in there)
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This is straight out of their religous text. They genuinely believe this stuff. They genuinely do this stuff for real. Surely you heard about the Jewish tunnels in NYC, right? They were literally r ping children down there. And they believe that their God wants them to do that and that it's morally right
This is why people hate jews