The problem was that there wasn’t a person in that club that had a gun and was a better shot than the off-duty policeman who was guarding the place. The Muslim terrorist had over THREE HOURS to kill anyone he chose because he was the only one with fire power.
If they’re going to insist on Gun-Free zones, then they need to have a plan to protect people in those establishments. I don’t know the details of the three hour wait, but how many wounded died during that time?