The assassination of anti-Syrian Lebanon official Wissam Al-Hassan threatens to send Lebanon spiraling into another sectarian civil war, as rioting erupted in the aftermath of his Sunday funeral. Hassan, who was closely linked to the March 14 movement and the Cedar Revolution that expelled Syrian troops from Lebanon, was murdered by a massive car bomb Friday in a traditionally Christian sector of Beirut. March 14 leaders and supporters have explicitly blamed the Syrian regime and its Lebanese proxy Hezbollah for the killing, which is thought to have been directed at intimidating Lebanese officials who are pressuring Hezbollah over the group’s overt support for Syrian President Bashar al-Assad in that country’s civil war. Washington has promised it will help in any investigation into the bombing.