we go to mike tobin, and chicago with an inside look.e. >> to start to understand the violence, you need to understand that for a young man living in these troubled neighborhoods, if he had a reputation for backing up a lot of kills, hurting a lot of people, he is intimidating. in that world, that translates to power and respect. >> you are cutting a gun right now, aren't you? >> i always carry one. this man said he became active with the black disciples at age. >> no one formerly joins a gang, the young man i started with just started hanging around gangs mostly for protection going to school. they got their first gun as preteens, usually a gift. >> i looked at it like i was love simple fact that they wanted to see me protected, they wanted to protect my life. >> gunfire linked to gangs as part of every day on the south and west side. just this week, three children were killed by stray bullets. the police superintendent continues to cry out for tougher sentencing. >> we need to create a culture of accountability of picking up a gun and

[shots fired] >> shannon: mike tobin is live in chicago with perspective from gang members behind theity's ongoing violence. stunning reporting, mike. >> to understand this violence and the difference to life we see from the gang-infested neighborhoods you need to understand that to the gangster ruthlessness is collateral. a young man with a reputation for racking up a lot of kills is intimidating and in that world, that translates to power and respect. >> you are carrying a gun now, are you? >> i always carry one. >> this man says he became active with the black disciples at age 9. >> selling drugs when i was 11. >> no one formally joins a gang. the young man started hanging around gangs mostly for protection going to school. they got their first guns as pre-teens usually a gift. >> i looked at it was love and this person loved me for the simple fact they want to see me protected and they give me something to protect my life. >> gunfire linked to gangs is part of every day on the south and west side. just this week three children were killed by stray bullets. the police superintenden