He forgets this was in a gun-free zone also….
Check it out:

Martin O’Malley, a long-shot seeking the Democratic nomination for president, told supporters Friday he’s “pissed” about the National Rifle Association’s influence keeping lawmakers from passing new gun control measures.

The former governor of Maryland made the comments in response to the “unthinkable tragedy” in Charleston, South Carolina, where a gunman shot and killed nine parishioners attending a Wednesday prayer service.