I would expand the UD definition as follows: “The act of being very pretentious about how much you care about a social issue, and also about your willingness to severely punish those whose views about this or that issue are, in your judgment, insufficient in terms of exhibiting their progressive bona fides or, you know, being on the “right” side of an issue with the “right” people. Example: Indiewire‘s punitive coverage of anything related to Woody Allen.”