Our Friend, Martin (1999)

This is the story of a Black teenager named Miles, who goes on a class field trip to the museum of learning what Dr. Martin Luther King, Jr. did for humanity, but at first his mind is focused on wishing he could be playing baseball instead. But the trip turns into an exciting adventure when he and his best friend Randy, who is white, are sent back in time, where they meet Dr. Martin Luther King, Jr. at several points during his life.