Hundreds of people gathered at both ends of Meridian Hill Park in Northwest Washington for a peace rally sponsored by the D.C Antiwar Network. But there were interlopers: Thirteen members of ProtestWarror, supporting the Bush administration and its policies in Iraq. When the Bush supporters arrived, about 20 black-clad, self-described anarchists emerged from the crowd, shouting profanity and epithets and demanding that they leave the peace rally. When the Bush supporters refused to leave, the anarchists tore the sign out of the Bush supporters' hands and stomped on them. When ProtestWarrior leader Gil Kobrin objected, several male anarchists knocked him...