I've always managed to hold a job. People always have a choice in whatever they do. They might have to struggle more than most people to make good choices, but they still have a choice.
America is a large country with lots of opportunity for people who are willing to work hard for their things. Even at minimum wage, a person working 60 hours a week (unpleasent, but not an unreasonable amount of hours) could have a reasonably good lifestyle.
Living a gang lifestyle doesn't have to be a person's path. If enough people would work to make good choices, the gang lifestyle could be a thing of the past.