Them being there doesn't bother me. The anti-semitic slogans and cheering of violence though does impact the safety and security of other students though.
One of the problems is there are very clearly multiple groups at the protests.
I know people who are quite pro-Palestine who won't go near these protests as long as groups like SPJ are leaders.
There is also the simple fact that the energy driving these protests for the students is only tangentially about this conflict.
Lots of the student protests are mixed in with local issues on those student campuses. (This always happens.)
Lots of the protesters at the places getting big media coverage aren't going to be students anymore either, because it is a thing getting large media coverage and so they are there for those reasons.
These things get complicated.