Among the dead were a 70-year-old man and two boys ages 7 and 10, Amnesty International said. In the southern town of Izraa, a man ran carrying the body of a young boy, whose hair was matted with blood from a gaping wound on his head, as another child wept and shouted, "My brother!"

In other towns, protesters scattered for cover from sniper bullets, then dragged corpses through the streets. Mobile phone images showed the bodies lined up on the floor inside buildings.

The rallies, most marching out from mosques after Friday's noon Muslim prayers, erupted in towns and cities stretching along the breadth of the country, including at least two suburbs of the capital, Damascus.

The death toll was likely to rise, raising fears that there will be an explosion of violence on Saturday as relatives bury their dead in funerals that in the past have turned into new protests.

AP