martin in sanford, florida, almost 17 months ago, opened up emotional questions about racial profiling and about a person's right to defend themselves. it also sparks spirited demands for justice. now that justice has spoken, those conversations have maybe even grown louder as thousands have taken to the streets in cities coast to coast. >> obama, i hope that you are looking. i hope that you are looking. >> i hope you burn in hell! >> you see george zimmerman get off. it's like, i don't know what more y'all needed to see. that was a tough one to swallow. >> there were calls for president obama to speak out in the wake of the verdict all week, especially from within the african-american community. and white house officials tell me that president obama was