A Bahraini man helps a woman from her car after a tear gas canister fired by riot police during confrontations with anti-government protesters landed inside of it, Saturday, April 21, 2012, in Diraz, ... more 
A Bahraini man helps a woman from her car after a tear gas canister fired by riot police during confrontations with anti-government protesters landed inside of it, Saturday, April 21, 2012, in Diraz, Bahrain, west of the capital of Manama. Bahraini opposition groups claimed Saturday that a man was killed during clashes with security forces, threatening to sharply escalate the Gulf nation's unrest as officials struggle under the world's spotlight as hosts of the Formula One Grand Prix. Authorities opened an investigation in a bid to diffuse tensions. (AP Photo/Hasan Jamali) less 
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Associated Press | Photo By Hasan Jamali
Sat, Apr 21, 2012 3:11 PM EDT