There's a little bit of discussion of whether free speech rights are violated, and thus conservatives are just as bad as communists and jihadis. As I noted at the comments, I thought about heckling Noam Chomsky at UCLA, but I might not have had any backup, and would have been swarmed by the Student for Justice in Palestine jihadis! That said, there's a lot of frustration on the right, so I can see the temptation. As Vlad Tepes notes:
It appears that the Jewish Defense League has given some Islamic BDS people a taste of thier own medicine that we have seen at so many campus’ across the world from Scotland to Sweden and through the USA ...