1. They hate religion.
2. They always root for the weaker group in a spat, even if the weak group is evil.
3. They hate the US, and Israel is our ally, therfore they hate Israel.
4. They hate the west, and want to see Islam grow stronger.
5. They hate white people, and want to see brown people go stronger.
I left out a few.
Nope, they hate brown people, too. The left does more to keep brown people down in this country and elsewhere than anyone else.
A more salient question would be "Why Do U.S. Jews hate America and Isreal's position on National Security"
Maybe its a masochist/victimhood thing?
Or very simply...They hate God.