Lots of the Jews in Madison are liberal, they are not conservative. They’d be the first to separate themselves from religious, pro-Israeli Jews.
I believe that the organized Jewish community of Madison - although it would be considered “liberal” - has had several disputes with a local group of pro-Pali radicals in the recent past. Yes, there would be some exceptions, but even the majority of “liberal” Jews would have little or no sympathy for the Rachel Corrie cultists promoting this play.