DUBAI (Reuters) - Bahrain arrested 29 people in the commercial district of the capital Manama on Friday as anti-government protesters marched in the city centre in defiance of a government ban, state media said late on Friday. Bahrain, where the U.S. Fifth Fleet is based, has been in political turmoil since a protest movement dominated by majority Shi'ite Muslims erupted in February 2011 demanding the Sunni-led monarchy enact democratic reforms. The demonstration was organized by an opposition group called February 14, said Jasim Husain, one of the leaders of the main opposition group, Wefaq. ...