Five things you should know about the Trayvon Martin case

Had Trayvon Martin not been shot dead on this day last year, he would have turned 18 this month. In the initial weeks following Martin's death, national anger fomented as his killer, George Zimmerman, had walked free, without any charges, claiming self-defense when he shot the unarmed teen. Across the country, thousands gathered for solidarity marches calling for justice and an end to the structural racism apparently characterizing the case.