The information is already there. With a substantial investment, our brightest minds can devise a way to combine and share our criminal data, our terror-watch data, our health data and our gun possession data -- responsibly and without seriously compromising privacy -- so we can have a far more accurate assessment of threats and risks than we have today.

http://www.cnn.com/2015/12/06/opinions/potarazu-zuckerberg-big-data-gun-violence/index.html

If this were done - how much do you want to bet that only the gun ownership piece would be implemented?

Give them all guns.