I think that Muslims exploit the anger and disenfranchisement that many blacks in prison feel. It is what the Muslims do.
I am not sure how one counteracts the appeal to the wounded nature of many of these men in prison.
Christians offer them love and forgiveness, but if they feel righteous in their anger, those are things they may not want.
But, Christianity also says they are responsible for themselves and must make the changes needed to be a productive part of society.
Victimology is a potent lure especially to those who do not see an easier way to explain why they have ended up where they are.
They see themselves as empowered by the brotherhood of Islam rather than pawns in a power struggle.
That's a good observation. I also think many came from a gang environment rather than a nurturing home life and the Nation of Islam and Islam in general continue that same type of atmosphere. It's more of what they already know. Christianity, OTOH, teaches family, too, but in a self-reliant, helping one another and loving your neighbor as yourself. Islam preaches giving to the poor, but only poor Muslims.
I still believe, however, that whoever searches for the truth in a sincere manner will be answered by the only, true God who is Jehovah - the self existent one. The Holy Spirit is in the WORLD to convict the world of sin, righteousness and judgment. No one will have an excuse.