MANAMA, March 19 (Reuters) - A bomb blast in a Shi'ite village in Bahrain injured two police ******rs on Thursday, the country's interior ministry said. "A terrorist blast injured two on-duty policemen in Karana village," it said on its Twitter account, giving ** further details. Bahrain, home to the U.S. Navy's Fifth Fleet, was swept by unrest during the 2011 "Arab Spring" uprisings when the majority Shi'ites - who the government denies discriminating against - demanded political reforms. Since then, there have been sporadic protests and a growing number of bomb attacks. ...