As humanity gets access to higher and higher technology, more and more smaller scale, non-governmental actors will get access to weapons that can cause asymmetrical damage. We will definitely get to a point where a single determined person can destroy an entire city. I strongly believe this is basically the great filter faced by all intelligent species in the universe. Only way to overcome this great filter is by ado…
Only way to overcome this great filter is by adopting policies that provide equal opportunities to each member of the species and create a non-divisive/united society where everyone practically helps each other How does this utopian ideal address the lone nutcase who would actually do something like destroy an entire city if he could? The Unabomber wasn't standing up for BLM or fighting income inequality, you know.
Universe is a large place, statistically speaking there must be criminal empires, psychotic species, and all kinds of other madness that exist but I believe these types of societies would be a considerable rarity as it is hard to pass great filter with such social structures.