I've stayed out of it until this last time when I decided to unfollowed every single person who liked or commented on any of the posts that were abusive towards this human. [...]

Mind you not one of the people who I unfollowed have said a word to me, but they have blocked or unfollowed me back and when someone did say something and I responded, I was met with silence. Do you think it's OK to gang up on a female with a ton of other people on the Internet or AITA?