KEHRORE PAKKA, Pakistan — Kausar Parveen struggles through tears as she remembers the blood-soaked pants of her 9-year-old son, raped by a religious cleric. Each time she begins to speak, she stops, swallows hard, wipes her tears and begins again. The boy had studied for a year at a nearby Islamic school in the town of Kehrore Pakka. In the blistering heat of late April, in the grimy two-room Islamic madrassa, he awoke one night to find his teacher lying beside him. “I didn’t move.