We’ve set a precedent that people protesting for leftist causes are allowed the be disruptive, break things, harass and intimidate people, trash buildings, burn things, and then have their demands met. Vote blue gained a massive amount of money from their 2020 riots. Many on the left believe that protests need to be disruptive. Civil disobedience is part of their protest culture and it is a badge of honor to be arrested.
Also, it wasn’t that nobody complained. In schools like UF (sasse), Jews were protected. In places like ucla and Columbia, they were not. The difference is who is in charge.