(CNN)Racial injustice -- focused on the treatment of young African-American men by law enforcement -- is the topic of several upcoming documentaries, which together provide an in-depth portrait of the fractured relationship between certain communities and the justice system. The Paramount Network and BET take the deepest dive with "Rest in Power: The Trayvon Martin Story," a six-episode unscripted series devoted to the 2012 killing and subsequent trial of George Zimmerman.