Mother Jones' statistics: 73% of mass-shooting perpetrators (years 1982-2012) have been white

[HereSince1628]

3. Interesting thing about the numbers, there were 16 mass shootings in 2012...

Assuming all 16 shooters were legally in possession of firearms (which they weren't)...
and an estimated number of legal gun owners in the US is 80,000,000,

% of legal gun owners involved in mass shootings is ~00.00002%

Assuming all 16 shooters were mentally ill (which hasn't been established)
The estimated number of persons with mental illness in the US is 78,000,000,

% of mentally ill involved in mass shootings is~ 00.00002%

Hmmm, interesting number, over all mentally ill and over all gun owners , they present the same average risk of being a shooter in a mass killing.

So, then, assuming all 16 shooters used bullets discharged from firearms
Well, no need to provide the numbers....

100% of the mass shootings last year involved bullets discharged from firearms

And furthermore 100% of shootings regardless of the number of victims in 2012 and every other year involve bullets discharged from firearms.