#Ap | Bahraini human rights activist Sayed Yousef al-Muhafadha, center, argues with riot police during a protest in Manama, Bahrain, Monday, Dec.17, 2012. Security forces in Bahrain have fired tear gas and stun grenades to break up protest marchers after calls by anti-government groups to snarl the Gulf nation's capital with demonstrators. (AP Photo/Hasan Jamali)