In all seriousness I feel like the common answers I saw of Diogenes (because that was like, his entire shtick) or Socrates (because they killed him for being annoying) are probably better answers but saying its Trotsky on a leftist forum is way funnier.
It never ceases to amaze me that he went off half cocked with a bad translation and became a bigot instead of engaging in self crit. Like this is the guy who started a movement? Bruh embraced hatred before admitting he fucked up bad and is somehow the most influential figure of his time.
And we're all still paying for it in blood.