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Photo by: Hassan Ammar

Bahraini anti-government demonstrators take an injured protester to a hospital in capital Manama early Thursday morning, Feb. 17, 2011. Armed patrols prowled neighborhoods and tanks appeared in the streets for the first time Thursday after riot police with tear gas and clubs drove protesters from a main square where they had demanded sweeping political change in this tiny kingdom. (AP Photo/Hassan Ammar)

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