Sir: Deadly attacks have been witnessed in every corner of the country but the clash between police officials and members of the Pakistan Awami Tehreek — in which at least 11 people were killed and about a hundred injured — is just harrowing. Who will lodge an FIR if the shooters were themselves policemen? There is no doubt that the violence-mongers would have scurried away by now. Nasiruddin SoomroHyderabad