How is this confirmation bias? I think maybe you don't know what that word means? Confirmation bias has to do with selectively favoring information that supports your opinion, or interpreting it in a biased way.
Are you suggesting that an unbiased, non-selective search of the data will indicate that gun violence actually *isn't* a problem in America, therefore indicating that these sorts of article are just confirmation bias?
On the contrary, by almost any reckoning, America's gun violence problem is raging.
More confirmation bias?