. >> reporter: latasha brown carries this picture of her 19- year-old. >> as a mother, that should not be a concern of mine that i'm worried that my son might be misread or deceived wrong because of who he is. >> we want our children to be respected for who they are and not profiled just by the color of their skin. >> reporter: as the nation thinks about florida, a mother asks. >> what kind of society are we creating that a perception could actually lead to death? >> now before george zimmerman shot and killed trayvon martin, he made reference to the teenager's race when he called police. questions of responsibility and scope of duty for the neighborhood watches have come up. our we'll give you a view on what the local neighborhood watch is like. >> reporter: we have been doing this for 16 years. dave evans is the director of the tanglewood watch patrol. the small community nestled in silver spring is normally quiet, but it isn't immune to street-level crimes. >> we have interrupted car break-ins, possibly even attempted thefts. we've had people roaming in the neighborhood that when th