@QasimRashid The first photo was taken at Baraboo School District, a public school. As a public institution, they are required by the First Amendment to tolerate even the most despicable behavior.

The second photo was taken at Colombia University, a private institution. They are not bound by the First Amendment and are not required to tolerate behavior they do not approve of.

Private institution means private property. Would you tolerate a protest in your living room?