Can you guys explain/help me understand all the anti-Jew stuff?

I used to think the anti-jew stuff was just from the nazis, but of course I was wrong.

I am aware of some reasons some people do not favor jewish people: Their apparent hand in the murder of Jesus, I heard about the oil crisis in 1973–74 because of the embargo on the US for apparently helping israel in some war? And then there’s the conflict with the palestinians altogether?

I see some comments around the internet about the US favoring jewish people because Elena Kagan was nominated and such. I know it’s on the internet so it is not the brightest people, but I am wondering where it all comes from? Thank you.