The deadliest day yet:
Security forces and government supporters opened fire on demonstrators on Friday, killing at least 30, as the largest protest so far in Yemen came under violent and sustained attack in the center of the capital, Sana.
The toll mounted rapidly through the afternoon, as some of the more than 100 people wounded by gunfire or rocks hurled by government supporters succumbed to their injuries, according to several doctors at a makeshift hospital near the protest site.
A heavy cloud of black smoke rose over a downtown commercial district at the southern end of the protest, which swelled to tens of thousands of people and stretched for a mile from its center at Sana University.
Government supporters in plain clothes fired down on the demonstration from rooftops and windows almost immediately after the protesters rose from their noon prayers, conducted en masse in the street on Friday.