The veteran rapper talks hip hop's role in Baltimore uprising and Art of Rap Music Festival.
Charles Hamilton and other MCs who put excessive force by police on blast in videos.
KRS-One, MC Lyte and creators of hip hop's call to stop the violence.
Director talks film possibilities during Q&A celebrating Grammy Museum exhibit on late rapper.
Music stars encourage peace following police shootings.
Iconic LP's from the label Russell Simmons and Rick Rubin launched.