Found via the above "Day By Day" cartoon, Plumb Bob Blog has bobbed and weaved unto quite a plumb meme:

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.