Krugman, Ryan, and Civil Debate

Clive Cook, over at Bloomberg View, did a particularly good job last week of articulating one of the central dilemmas that face many of us who are interested in civility within the landscape of our highly charged political present. His article, “Krugman’s Wrong: Civility Isn’t Stupid,” looks at one of the biggest players and one of the most common tropes in progressive politics in the United States; but his point is well made, and equally applicable among conservatives.

The dilemma is this: is it ever acceptable to take a break from civility and launch an ad hominem attack on a political opponent? Especially when it is apparent, from your perspective, that that opponent is acting in bad faith?