A Bahraini riot policeman chases protersters throwing petrol bombs

Black smoke leaps the air after Bahraini anti-government protesters, not pictured, set ablaze a row of burning tires set on a street in Jidhafs, Bahrain, Sunday, April 21, 2013.

A riot policeman chases protesters, not pictured, throwing petrol bombs, on a street in Jidhafs, Bahrain, Sunday, April 21, 2013. <AP Photo/Hasan Jamali>