Nelson was born in New York City on June 7, 1951, to Stanley Nelson Sr. and A'lelia (Ransom) Nelson, and the second of four children.[9] Nelson's mother A'lelia Nelson was the last president of the Madam C.J. Walker Manufacturing Company, a famous early black enterprise established in 1906 that produced hair care products and cosmetics for black women.[10][11] A'lelia was also a librarian at City College of New York and was acquisitions supervisor for the Library of Congress.[10] Nelson's father Dr. Stanley Earl Nelson Sr. was a dentist who was a pioneer in reconstructive dentistry and taught at New York University. Dr. Nelson was also an active supporter of the civil rights movement.[12] Nelson's sister Jill Nelson is a prominent African-American journalist and author.[13]
Nelson soon found a job at PBS, working as a television producer with Bill Moyers for the TV series Listening to America. His next film releases included the Emmy Award-nominated documentary The Black Press: Soldiers Without Swords (1999),[18] and Marcus Garvey: Look for Me in the Whirlwind (2000) about civil right activist Marcus Garvey was first place overall winner at the Black Filmmakers Hall of Fame in 2001 and won best documentary at the 2002 Black International Cinema Awards.[9][19] Nelson has made several productions for the Smithsonian Institution, including a tribute to African-American artists, entitled Free Within Ourselves, and Climbing Jacob's Ladder.[1]
Nelson's 2004 film A Place of Our Own was nominated for the Grand Jury Prize at the Sundance Film Festival.[23] In 2004, he also won the Educational Video Center's Excellence in Community Service Award.[24]
Nelson's 2014 documentary Freedom Summer profiled the 1964 civil rights movement activism in Mississippi. It aired on PBS American Experience and won Best Documentary at the Pan-African film festival.
Nelson directed the 2015 documentary The Black Panthers: Vanguard of the Revolution, the first of what is to be a three-part series of documentaries about African-American history titled America Revisited. He won an Emmy Award for Exceptional Merit in Documentary Filmmaking as one of the producers of this film in 2016.[3]
Nelson is Executive Director and co-founder of Firelight Media with his wife, writer and producer Marcia Smith,[30] a nonprofit that provides technical education and professional support to emerging documentarians. The organization received the MacArthur Award for Creative and Effective Institutions in 2015.[26] He is co-founder of Firelight Films, the for-profit documentary production company.[31]