For the first time anyone can remember, House Speaker Nancy Pelosi teared up at a press conference this morning in response to an off-beat question about the current state of political discourse. Visibly struggling to retain her composure, Pelosi recalled a time in San Francisco when emotions ran out of control, obviously referring to the assassination of Mayor George Moscone and Supervisor Harvey Milk by an angry former supervisor Dan White on Nov. 27, 1978. "We are a free country, and this balance between freedom and safety is one that we have to carefully balance," Pelosi began. Then out of...