I don't do much screening. I'd just prefer to have him listen to Ernie Anderson playing Rochester than Amos and Andy.
Anderson was a black comedian getting top billing and a high salary. His character often gets the better of Jack Benny, and is always treated respectfully (as respectfully as any of the characters, anyway.)
Compare that to "Amos and Andy" where two white actors play blackface and are often the butt of the joke.
I know someday he'll be ready for Lenny Bruce and Richard Pryor, but frankly, I'm just trying to get a boy to bed... ;-D