It's not random, and no one is being persecuted. It's not retaliation or mocking.

People have a right to share information with each other about abusive people or places who should be avoided.

The lists could be campus rapists, or bad drunks, toxic places to work, or a list of towns or businesses that aren't safe for black or queer folk to visit.

Most of these informal lists have been around for decades. For some people, these lists help them to avoid some dangerous people or places.

Are there some people in these lists who don't deserve to be? Probably.

But how are you going to regulate it? It's speech after all.