Democratic presidential front-runner Howard Dean admitted on Monday that he sometimes gets so angry over political attacks on his character and record that he needs to be "restrained." "If someone punches me I am apt to chase them down and I need to be restrained by the people who know better and have been in the game longer than I have," Dean told MSNBC. Calling himself "a street fighter," Dean said that some of the worst attacks have been prompted by reports that he avoided service in Vietnam by telling draft board doctors that he a back injury - before...