Politically active actor who won an MTV Movie Award for Best On-Screen Duo for his role in Lethal Weapon 3 with Mel Gibson.
He suffered from epileptic seizures as a young man, and created a form of self-hypnosis to prevent them.
He became known as a longtime activist for middle class, immigrant, and minority rights, and spoke at the Occupy Oakland protests in 2011.
His parents, employed as postal workers, were active supporters and members of the NAACP during the civil rights movement.
He starred in the 1985 film, The Color Purple, with Whoopi Goldberg.