Good luck with that.
This was idea addressed by Min. Louis Farrakhan at his most recent Savior's Day event. Though the idea of enlisting armed black men to protect the community is not a new concept, enlisting gang members to call a truce to help black people is not a good idea mainly because of their mindsets. Malcolm X offered a better idea when he wanted VietNam vets to help train black men all over the world to help defend Africa and the US black populations. I suspect this is where Louis Farrakhan got the idea.