freeman, clinton tackles the issue head on: >> she says their names: trayvon martin, sandra bland; and makes their mothers' fight for justice their own. >> she's saying she wants to help african american in this community. i want everyone to come together because we do have a problem here and it needs to be addressed. >> woodruff: sanders tackles racial injustice in part by linking it to his central rallying cry of economic inequality.

>> he was there when dr. king marched on washington. unafraid to challenge the status quo to end racial profiling, take on police misconduct, and take down a system that profits from mass imprisonment. "there is no president who will fight harder to end institutional racism." >> he's consistently fought for rights for all people: equality and justice. and it's not just a passing thing with him. it's something he's done for