Bahraini protesters set up roadblocks opposing Formula One Grand Prix

Bahraini youths set up cement block roadblocks during clashes with riot police to slow police vehicles moving through the village of Diraz, Bahrain, on Thursday, April 18, 2013. Graffiti at right opposing the upcoming Formula One Bahrain Grand Prix, to be held Sunday, is written beneath pictures and names of Diraz residents killed in unrest. Organizers of Bahrain’s Grand Prix said Thursday that sporadic protests against the race and violent unrest across the Gulf nation do not pose a threat to the premier international event in the kingdom.

Bahraini youths watch for riot police between clashes in the village of Diraz, Bahrain, on Thursday, April 18, 2013.

A riot policeman jumps a fence to extinguish a tire fire set by Bahraini anti-government protesters in Sehla, Bahrain, on Thursday, April 18, 2013. <AP Photo/Hasan Jamali>