Summary: Three recent U.S. Special Forces operations killed 50 people — the vast majority civilians, Afghan officials say — raising the ire of villagers and President Hamid Karzai. The problem, Afghan officials say, comes when ordinary villagers hear the commotion of Special Forces overnight raids and, fearing robbers or an attack from a hostile tribe, grab their guns and run outside or fire from their homes. U.S. forces then fire back and end up killing civilians.