MANAMA (Reuters) - Bahraini forces backed by helicopters launched a crackdown on protesters on Wednesday, imposing a curfew and clearing hundreds from a camp that had become the symbol of an uprising by the Shi'ite Muslim majority.
Hospital sources said three policemen and three protesters were killed in the assault that began a day after Bahrain declared martial law to quell sectarian unrest that has sucked in troops from fellow Sunni-ruled neighbour Saudi Arabia.
