Many of those in these campus demonstrations are themselves Jewish.
I honestly believe it's a form of intimidation that makes them do what seems strange, supporting a cause that wished them dead. Because once these useful idiots are no longer needed, that is exactly what they be if they refuse to convert.
Oy, Ir Narishe Tsionistn (Oh, You Stupid Zionists) - Yiddish Anti-Zionist Song
https://www.youtube.com/watch?v=4C0E4qxm-7I