Brandon Morse wrote about the My Little Pony critique of Marxism and social justice warriors. I couldn't really believe it, so I had to watch (or at least skim). Check out the 25 minute mark for a taste.
And yes, I know Vonnegut intended Harrison Bergeron as a parody of the parodies of Marxist dystopias. But it reads just fine straight up. Or in particular, in the really well done short film version from several years ago called 2081. If interested, skip the songs in the My Little Pony episode above and watch 2081 instead, it is barely 20 minutes long.