Celebs, politicians post tributes to comedian and activist Dick Gregory

Gregory died Saturday at age 84.

— -- The death of comedian and activist Dick Gregory at age 84 on Saturday prompted a flood of tributes on Twitter from celebrities, activists and others.

Activist and writer Shaun King posted pictures of Gregory as a young man. "Rest in power, good sir," King wrote.

Some people posted excerpts from Gregory's memoir, "Callous on My Soul," such as when he wrote about a waitress in the South telling him they "don't serve colored people."

Here is a sample of some other tweets paying tribute to Gregory and lamenting his passing.