Here's the proof: https://en.wikipedia.org/wiki/Mass_killings_under_communist_... . Those kinds of mass killings can only happen when the citizens are disarmed, because it's logistically impossible for a government to seize absolute power when a significant proportion of the citizens are armed.
Those kind of mass killings also happen in authoritative regimes, which typically emerge from violent societies.
> it's logistically impossible for a government to seize absolute power when a significant proportion of the citizens are armed.
This is literally, and provably, untrue. For example:
The Soviet Union: The Bolsheviks initially proclaimed that "the arming of the working people" was essential to prevent "restoration of the power of the exploiters". It was only later that they restricted private gun ownership.
The Nazis: Contrary to popular gun rights narratives, Nazi gun laws actually relaxed restrictions for most Germans while targeting specific groups. Sometimes authoritarianism is the same as populism.
Rwanda: Prior to the genocide, the government systematically distributed weapons to local administrators and militia groups while ensuring targeted populations remained defenseless.
Myanmar: Armed civilian resistance groups formed, but the were essentially wiped out by the overwhelming advantages in air power and heavy weaponry that an actual organized military had. The firearms were useless. Arguably, worse than useless as those who fought back died in large numbers.
Venezuela: The regime armed its supporters while systematically removing weapons from the general population. The population was well armed, they just couldn't fight back against an organized government response.