Anti gun control article:
http://www.latimes.com/la-oe-wilson20apr20-story.html

Pro gun control article:
https://www.washingtonpost.com/news/the-fix/wp/2015/10/08/how-to-argue-about-gun-control/
http://www.bbc.com/news/world-us-canada-34996604
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3828709/
http://www.justfacts.com/guncontrol.asp

peer reviewed:
http://www.sciencedirect.com/science/article/pii/S1359178903000442;