As a symbol of change in the Arab world, angry protests in Bahrain stand in stark contrast to the mostly peaceful demonstrations in Egypt that led to the ousting of President Hosni Mubarak.  Reporters describe sleeping demonstrators attacked without warning while camped out in Pearl Square. The police used birdshot, rubber coated steel bullets and tear gas to tamp down the civil unrest, killing three and injuring many more. Now the military has taken over the city and called for a ban on organized gatherings, while moving tanks into Pearl Square. Joining us now with more is Nicholas Kristof, columnist for our partner The New York Times.