Summarized in one tweet.
Note that the initial call for civility was based on the utter lie that a “climate of hate . . . coming, overwhelmingly, from the right” was responsible for the shooting of Gabrielle Giffords, just as the current call for an end to civility is based on the utter lie that anyone who disagrees with Paul Krugman is stupid, venal, and deserves to be denounced as “talking cruel nonsense.” I suppose that there is some consistency to Krugman; he remains a partisan hack, his editorials do not differ from press releases sent out by the Democratic National Committee, and he is fundamentally incapable of telling the truth.