Ms. Sadie Roberts-Joseph (1944–2019) was a beloved Baton Rouge activist, museum founder, and quiet force for justice whose life's work centered Black history, youth, and community pride. She founded the Odell S. Williams Now & Then African-American History Museum — now the Baton Rouge African-American Museum — and led Community Against Drugs and Violence (CADAV) to combat drugs, violence, and neighborhood blight in North Baton Rouge.