Questlove, Method Man, Raven-Symone and more celebrate the early history of hip hop, the man known for inventing Motown, Berry Gordy, and "Star Trek" actress Nichelle Nichols's incredible activism on and off the TV screen.

British suffragettes learn jiu-jitsu, Gwendolyn Sanders ignites the Birmingham Crusade, and Judy Heumann leads a sit-in for people with disabilities.