Sean Patrick Griffin, PhD, is a former Philadelphia police officer turned bestselling author. He is Professor and Department Head of Criminal Justice at The Citadel in Charleston, South Carolina.
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The Black Mafia is one of the bloodiest crime syndicates in modern US history. From its roots in Philadelphia's ghettos in the 1960's, it grew from a rabble of street toughs to a disciplined, ruthless organization based on fear and intimidation. Known in ... SEE MORE