An article on the front page of today's Boston Globe mentions Sarah Palin, the Tea Party and the town hall meetings as contributing to "tension," a degree of heat in political discourse," "a potential for physical danger in their anger," etc. I was wondering when someone would accuse talk radio -- the strategy used by President Clinton after the Oklahoma City bombing -- and I wasn't disappointed: Former secretary of defense William S. Cohen, who represented Maine for three terms in the House and three terms in the Senate between 1973 and 1997, said the more partisan tenor of political...