You sir, are correct. He should direct his rage at those who effectively disarmed the victims.
Some who have lost loved ones do this. We see those rail against the presence of guns, because those are the ones the media brings forth as speakers. Those are the ones the media deems legitimate. This is all agenda driven political theater.
There is a reason that the DART center for Journalism has chosen to have, as one of its speakers, a victim who wants more gun control, and not one who wants to restore second amendment rights.
http://gunwatch.blogspot.com/2015/03/dart-center-speaker-selection-for-gun.html
The very term “gun violence” biases the argument. It chosing shows a set of assumptions about reality that are not true. All violence is not evil, and violence committed with guns is not more evil than violence committed with bombs, or cars, or knives, or hands and feet.
“We see those rail” should be:
“We see those who rail”