"The data clearly supports your opinion"
What a great subtitle to the page. The first thing I looked for in the graph was data that supported my opinion. The subtitle called me out, and I read the rest of the page with (what I hope was) a more objective eye.
Unfortunately guns are a very polarizing topic, and reliable, unbiased analysis is difficult to come by. The magnitude of other confounding factors (income, crime, education, family history, policing policies and intensity, etc.) make an honest attempt at understanding their influence even more difficult.