Eh, I don't know about that. Consequences should be proportionate to the action. We learned that during the inquisitions, witch burning trials, and other forms of "mob justice" in human history. The hive-mind tends to be rather merciless when people start encouraging each other to take action. Almost becomes a "contest" of egos, in each person trying to be more and more "just" than the other, losing sight of the original context. The individual incidents themselves are reduced to serving as just a "prop", in the sight of a larger "social struggle".
For sure, he can be publicly called out for it, encouraged to apologize, and so forth, but I think we do have to set a reasonable limit to what sort of "consequences" ought to be expected.