Masked Bahraini anti-government protesters carry petrol bombs ahead of a march in Malkiya, Bahrain, on Sunday, Oct. 28, 2012, where marchers were calling for freedom for political prisoners and honoring those killed in the uprising from Bahrain’s western villages. Youths with petrol bombs walked ahead and behind the marchers as lookouts for any riot police who might approach to disperse the gathering. Clashes between protesters and police erupted as the march was ending.