for black men between the ages of 15 and 34. it is a staggering statistic that pushed one doctor to take action in and out of the hospital. >> i don't like pronouncing people dead. it's probably the worst thing that i've ever had to do. i want to preserve life. when i see patients that are coming in with violent injuries, when somebody looks like you, from your neighborhood, a lot of this stuff really hits home. you realize, i don't want this to happen anymore. what do we do about it? >> to find out how dr. rob gore is working to end violence in his community go to cnnheroes.com. while you're there, nominate someone you think should be a cnn hero.