The relationship between Black and Jewish communities ... with his big white beard, marching alongside Martin Luther King Jr. in 1965's march from Selma to Montgomery. They're all wearing Hawaiian ...

For at least three decades, it was ever-present: manicured, combed and, even as the king entered his ninth decade, always jet-black ... as he gets white in his beard, goes for a dye job ...

He claimed he was doing it to protect the "natives" from Arab slavers, and to open the heart of Africa to Christian missionaries, and Western capitalists. Instead, as the makers of BBC Four ...