KARACHI, Pakistan — Hundreds of youths set fire to a Pizza Hut restaurant, two gas stations and a dozen vehicles in Pakistan's biggest city, Karachi, after Saturday's funeral for an Islamic Shiite cleric killed in a suicide attack. Rioters rampaged through a busy commercial area a day after a suicide bomber killed cleric Allama Hassan Turabi, his cousin and a police guard. Police fired shots in the air, swung batons and used tear gas to control the crowd. Hours earlier, Turabi was buried at a city cemetery after more than 8,000 people, beating their chests with their hands as a...