Former girl gang member: 'I took my anger to the streets'
12 January 2013 Last updated at 10:19 GMT
Politicians, youth leaders and those affected by violence are meeting at a conference in London aimed at tackling Britain's gang culture.
One subject up for discussion is the increase in the number of girls being drawn into gangs.
One former girl gang member, Tracey Miller, and Nadine Woodley, who has written a play about gangs, spoke to BBC Breakfast about some of the root causes of violence.