Those not taking action contribute as much as those trusting him to preserve Ratimov in DT and allow him make more and more such abuses.
That's simply not true and I don't think that this guilt tripping technique is a right approach and might even create the opposite effect.
One more thing, this "
Ratimov" thing that you keep doing is neither fun or smart but instead childish as that's what kids do (make fun of name of the person they dislike or when in argument) and should be beneath you, despite his insults towards you.