Police sources said about 450 protestors were arrested in the crackdown and more arrests are expected while Khan’s Pakistan Tehreek-e-Insaf (PTI) said it was a violent assault on protesters by security forces firing live rounds with the intent to kill as many people as possible. Police sources said about 450 protestors were arrested in the crackdown and more arrests are expected while Khan’s Pakistan Tehreek-e-Insaf (PTI) said it was a violent assault on protesters by security forces firing live rounds with the intent to kill as many people as possible.