It's not disputing the numbers is it? Just a lots of words trying to make this seem OK and not that big a deal for some reason.
Doesn't really matter what the reason for the shooting is, or how good or bad the people shot at are, it is still an insane amount of gun violence.
I understand that if you have lived in the US all your life you get desensitised to all but the extreme cases but the fact that there are 272 incidents where more 4 or more people are shot at is shocking to me living in the UK. Sorry I can't take that much comfort from the fact that on average only one person is killed in each mass shooting.
And then on top of that you have all the incidents where less than 4 people are shot at...giving annual casualty figures greater than a fairly serious regional war.
11,686 deaths so far this year, including 545 children under the age of 11.
23,717 people injured by guns
http://www.gunviolencearchive.org/