In two alleged encounters with dacoits, the Karachi police on Sunday gunned down two suspected criminals. In another incident, two robbers were beaten to death after a mob managed to get hold of them while they were trying to escape after shooting a man dead and injuring his two sons for offering resistance during a house robbery.One of the police encounters took place in the Quaidabad area, in which police claimed to have killed a notorious dacoit. A cop, Constable Gul Sher, was also shot and...