Leonard Pitts: Why are we OK with mass shootings?

I hate mass shootings.Everybody hates them, of course: innocent death, fathers, fiances, best friends, and sons snatched violently away, sudden carnage crashing ordinary days. But I hate them for an additional reason.When things like this happen, you see, it’s my job to have something to say. And I’ve got nothing. More accurately, I’ve got nothing left that I haven’t already said.Shall I parse the killer’s motivations? I did that after Columbine.Shall I praise heroi