These people focus on prisoners, and have a program called "prison prevention" for school kids, also are active with our military personnel. There's is a world wide mission.
This is a promotional video for distribution at churches, but it outlines their efforts in a clear manner.
here is their website:
Rock of Ages Ministries
Remember those who are in prison, as though in prison with them, and those who are mistreated, since you also are in the body. --
Perhaps you would like to pray for their efforts and ask God to bless their ministry.