I feel like either some folks think that people will just Tolerate This due to Big Events or no one has actually thought beyond being Needlessly Evil and neither of them are comforting

My money was on the maddest thing I could think of. A live grenade.

Clearly not mad enough.

I remember reading something a while back that said that many of the sciences had a watershed moment where it was clear it had gone Too Far. Its examples were physics with the nuclear bomb, medicine with thiamolmide, biology with eugenics, and computer science "hadn't had one yet, but soon it will"