Police appealed for calm Thursday in a tense Memphis neighborhood where a rock-throwing crowd gathered after federal marshals fatally shot a black man who, authorities said, had rammed a police vehicle with a stolen car. Thirty-six officers suffered minor injuries from flying rocks and bricks in the hours following the death of 20-year-old Brandon Webber, who was killed Wednesday evening after he exited the car holding some type of weapon, authorities said. Webber had been wanted in a June 3 shooting that happened during a car theft about 25 miles (40 kilometers) south of Memphis in Hernando, Mississippi.