One of Iraq’s most sacred Shiite shrines suffered major damage today in a bomb attack in the city of Sammara. The Askariya shrine contains the tombs of two revered descendants of the Prophet Muhammad. The attack destroyed the shrine’s golden dome. Police say they believe several bodies are buried beneath the rubble. Thousands of Shiites across the country protested the attack, which threatens to further inflame Iraq’s Shiite-Sunni sectarian divide. The bombing marked the third attack on Shiites in as many days. On Tuesday, a car bomb targeting a Shiite area of downtown Baghdad killed 22 people and wounded dozens more.