KeepFaith, Thanks for sharing your story. I'm glad you found SR. Please read the stickys at the top of the page. Learn all you can about addiction and gangs. Research on the internet. Arm yourself with knowledge. Also, keep in mind that if he's arrested and his paraphanelia is found in your house, you could be arrested too.
As you learn, in time you will know what decisions you can make that will help your son. You don't have to do anything right this minute. Baby steps. While he's still a minor, you can take steps for intervention if needed. Once he's 18 all you'll be able to do is watch. A good place to research is a program called teen challenge. There is hope for a better life for your son without the drugs and gangs. I'm praying for you and your son.