Some perusing on the internet yields that about 10 billion people were born in the 20th century. Searching history additionally shows that governments killed 100 million of their own people (excluding acts of war). So, governments killed 1% of their citizens in the 20th century. It is easy to say that number would have been larger had all nations been ruled by the murderous socialists/communists/progressives.
Here in the US, the number of people killed with firearms is approximately 16,000 per year excluding suicides. That's about .005% of the population. In one hundred years, that would be approximately 0.5%. So about 1/2 or 8,000 are crime on crime deaths leaving around 8,000 a year. Now extract from that justifiable homicide, cops doing their job or citizens protecting themselves, we subtract 1,500 leaving 6,500. Take out accidents of 500 a year now you have 6,000 remaining in the homicide category. Now we see that 0.005 is actually closer to 0.002%. Over 100 years that would be 0.2%.
So, as a citizen of the world minding your own business and obeying the laws you are 5 times more likely to be killed by your government than someone with a gun. If you look at the deaths by gun in the US most are concentrated in about 1/2 dozen liberal run cities like Chicago which implies you are 10 times more likely to be killed by a government excluding acts of war.
"Ideas are more powerful than guns. We would not let our enemies have guns. Why should we let them have ideas?" -- Joseph Stalin
"All political power comes from the barrel of a gun. The communist party must command all the guns, that way, no guns can ever be used to command the party." -- Mao Tse Tung redefined as Mao Zedong
"For the first time in history does a nation have complete gun registration. Our streets are safer, our police more efficient. The world will follow our lead in the future." Adolph Hitler
The recent mass shootings are undeniably tragic. Many of the mass shootings are related to young men growing up without a father and being fed drugs to make them calm....look it up. The easy answer of banning guns has demonstrably monstrous and grotesque unintended consequences multiplying death and greatly multiplying human misery.
If someone has better numbers please share.