Gregory Boyle, S.J., the founder of Homeboy Industries, the largest gang intervention program in the United States, talks about why young people join gangs, and the services his agency offers to "homies" and "home girls" who finally decide they want to leave the gang life. In his new book, Tattoos on the Heart [2], Fr. Boyle offers stories of the young men and women he has met in his ministry that are both sad and funny, a glimpse of a segment of the poor that is too often overlooked.