20th century history ought to teach us that too much power in government almost invariably leads to mass murder of some group or another: https://en.wikipedia.org/wiki/List_of_wars_and_anthropogenic...

Given that modern technology enables silencing political opposition without necessarily murdering them, some might argue that we'll see fewer murders in the future.

But China is a good counter-argument to that assertion. It's very technologically advanced, yet its totalitarian regime is continuing to commit atrocities (murders, work camps, prison sentences without due process, etc.) against Uyghurs.