I was thinking that the ultimate most powerful dictator in human history could one day be a super-computer.
It could control everything: our computer systems, infrastructure, electricity, food and water allocations, medical and pharmaceutical administration, etc. Maybe even determine strict population limits and methods used to achieve that. Perhaps amoral methods.
We would be at its mercy, and we couldn't fight it. Why? because it could be a brain with a God-like intelligence far beyond our capacity to intervene in its processes or programs.
Will we see such a scenario at some future date? Probably not, simple human dictators can inflict much damage, but they can't control everything. But they could be catalysts for human extinction by triggering a series of unstoppable events leading to a final cataclysm for the planet.
Who knows? Maybe someday we'll all be in a global lockdown and everything we think, do and say will be dictated by that entity as well as whether we live or die.