We're not sure if you can say a white supremacist rally 'turned' ugly, but the LA Times report that police had to intervene outside City Hall when "a bare-chested, middle-aged man with Nazi insignias tattooed to his chest and back," walked into a crowd that was there to protest against the racists.
Counter-demonstrators surrounded him, chanting, "Nazi scum." One pushed a sign in his face and another jostled him. He was bobbing his head mockingly as the crowd chanted, when pushing suddenly broke out and about a dozen protesters began showering him with punches and kicks as he fell. The wood handle of one sign was smashed so hard into his back it snapped.
An undercover cop intervened to save him.