About three and a half minutes into this LOOONG clip, you will see every liberal’s favorite girlfriend Rachel Maddow start arguing with David Frum about whether political humor is as discourse-cheapening and violence-inciting as shouting “Kill him!” at a political rally. “We all could do better,” says Frum, boringly. Then he says Rachel Maddow should invite Paul Wolfowitz on her show for a Serious Discussion, and then they both have a hearty chuckle because really, Wolfowitz? That clown? [MSNBC]