BEIRUT -- Syrian police sealed off a southern city Saturday after security forces killed at least five protesters there in the first sign that the Arab world's pro-democracy push is seeping into one of the region's most repressive places. Residents of Daraa were being allowed to leave but not enter the city on Saturday, said prominent Syrian rights activist Mazen Darwish. The quick cordon seemed aimed at choking off any spread of unrest after Friday's clashes and emotional funeral processions for the dead on Saturday. President Bashar Assad, who has boasted that his country is immune to the cries for...