Mario Van Peebles is 51 (shown here with his father, Black Cinema legend Melvin Van Peebles). Melvin was the original Robert Townsend/Spike Lee; writing, directing, producing, starring in, and using his own money for his first film. His movie "Sweet Sweetback's Baadassss Song" from 1970 was considered too revolutionary, and the studios wouldn't touch it. Many consider it to be the first "Black" film that a Black man stood up and defied "the man".
As an interesting side note, when Melvin ran out of funds, Bill Cosby gave him the money to finish it "on the under". Maybe that was his way of getting back at white Hollywood for all of the racism he experienced. Anyway, here is a clip, it is long, as all of them were on youtube, so it is up to you how long you want to view it. It is a good glimpse of early 70's Black Film (and guerrilla filmmaking), and an example of how far we've come in Black Hollywood via technology: