This criteria certainly seems to point in that direction: "Activists, organizers, and other influential individuals". I mean, they don't quite outright come out

This criteria certainly seems to point in that direction: "Activists, organizers, and other influential individuals". I mean, they don't quite outright come out and say that they verify people for advocating for causes that Twitter supports, but I don't think there's any other way to read "activist" really.