I missed this when it appeared about a month ago, but already it seems to have entered political parlance. The term is "screeching inversion". It was coined by Plumb Bob who writes:
The short version of the screeching inversion is that the most immature among us get to pretend that they’re moral paragons, while the most mature are treated as moral pariahs, simply because the immature screech louder and a lot more often. Thus, in a morally deteriorating society, evil gets tagged as good, and good, evil.Read the rest of his post here.