TL;DR I hate Israel cause it’s occupied Palestine. Millions of Palestinians were victims of atrocities committed by Israelis that forced them to leave their own land, and millions today are still victims of apartheid in their own land. The only reason this suffering is even allowed to happen nowadays is that it gives the U.S. empire the ability to exert more control over the region.
If you want to learn more about this, well, you know where to look.