Can't post this on Reddit! Lolz!
Ok, I'm driving to work and my mind is wandering, and it suddenly occurs to me what progressives find offensive about the beloved children's book: Little Black Sambo (1899)
A rundown of the story: see if you can spot the offensive part(s)! Maybe I'll also translate this into "Ghetto Speak" for modern audiences :>

Read it here text only due to possibly nsfw images. (Bonus: Little Black Mingo!)

1. Sambo's parents buy him some fancy clothes
   1a. His mother (Mumbo) makes him a jacket and trousers
   1.b His father (Jumbo) buys him shoes and an umbrella
2. He goes for a walk
3. He meets a tiger, who steals his jacket
4. He meets another tiger, who steals his pants
5. He meets another tiger, who steals his shoes (and wears them on his ears)
6. Tiger #4 steals his umbrella (who carries it with his tail)
7. Then the tigers started fighting, and chased each other around a tree until they melted into butter.
8. Sambo retrieves his fancy clothes and goes home
9. Sambo's father finds the butter and brings it home for dinner
10. Then Sambo sits down to dinner with his mother and father and they eat lots of pancakes with (tiger) butter.
    The End.