<iframe src="//www.googletagmanager.com/ns.html?id=GTM-WFHFBM" height="0" width="0" style="display:none;visibility:hidden">

Reddit

City Life

How the Marathon Bombings Kickstarted the Crowdsourcing of Crime Investigation

When the Boston Police Department tweeted on April 15 that it was seeking camera footage from the finish line to help find the bombers, marathon […]