In honor of Black History Month, American Masters looks at just ten of its artists and advocates who shaped America’s culture, changed the course of history, and in particular, took a stand in the Civil Rights Movement to create a lawful and just society for all.  They include musical performers Cab Calloway, James Brown, Jimi Hendrix, and Sister Rosetta Tharpe, actors Sidney Poitier and Paul Robeson, and writers James Baldwin and Alice Walker.