Pittsburgh police on bicycles block traffic from demonstrators protesting the deaths of two unarmed black men at the hands of white police officers in New York City and Ferguson, Mo. as they lay in the street during march through Pittsburgh on Thursday, Dec. 4, 2014. (AP Photo/Keith Srakocic)
{"Image ImageDescription": "Pittsburgh police on bicycles block traffic from demonstrators protesting the deaths of two unarmed black men at the hands of white police officers in New York City and Ferguson, Mo. as they lay in the street during march through Pittsburgh on Thursday, Dec. 4, 2014. (AP Photo/Keith Srakocic)", "Image Artist": "Keith Srakocic"}