These are soldiers in a political, cultural, and religious war the liberal cult has been waging against America for decades. Usually soldiers of this type cloak their efforts in the PC doctrine: they really only want to stop people from being offended (but it's only liberals who are protected from being offended and the truth can not be stated about certain things without them being offended; it's ok to offend gun nuts, Christians, conservatives, non-feminist women, old white men, and loyal Americans, so the result is that patriot thought is suppressed and liberal thought is promoted). It looks like these soldiers were stupid and overzealous: they cast off their cloak and were exposed, and now they are removed from this one venue, kind of anyway. But there are many more like them who are not stupid like they were, and are still very active in the indoctrination of their students.
We've been hearing about liberal indoctrination in the government schools for decades and now we are seeing the effects of it, in groups like Antifa for example. Kids don't become America-hating, socialist, racist bigots committed to the suppression of patriot thought on their own; they have to be programmed to be those things. If you look at a factory and see what goes in and what comes out you know what that factory does even without looking inside the factory. The same thing applies to the government schools. And sometimes we get a look inside the factory.
Exposing and removing these few operatives is good, but it's too little too late. It will take a much greater effort to stop and reverse the effects of decades of liberal indoctrination, and I don't know if this nation has the will to do that anymore. I hope it does, but I don't see it happening.