. >> i want to turn to the audience and introduce you to chrissersk erskin from birmingh alabama.s your question? >> my question is with the tension around this situation, it reminds us of birmingham that my wife and i grew up in. we grew up hearing these stories. we weren't a part of jim crow, but we heard about it. we didn't know o'corner but we hea -- o'corner but we heard about it. what can we do now and what measures can be implemented so this is not a revolving crisis in all communities? >> put that to professor oe ogletree. you explored answers in your book. 13 years later, we're not having the same conversation about what did we learn from trayvon martin's death? >> we can't let trayvon martin's death be in vain because it was a moment that got all of us to think your critically about it. we have to think about our role in law enforcement. we need a much more diverse law enforcement, talk about community policing, where people are on the ground, on the streets, talking to people so they know you're there to protect and to serve, not just to arrest and profile. number three