Do you really genuinely believe that typical american liberal types would ignore a genocide committed against Jewish people by anyone, particularly arabs? In the American liberal mind "genocide" is, essentially, synonymous with The Holocaust, and I think your average liberal is, if anything, sensitive to Jewish discrimination, over and above random people out there in the world. There are definitely anti-semetic Americans and they should be launched into the sun, but I think your sense that people wouldn't care if Jews were being killed in the tens of thousands is extremely off point.