Of all the stupid things you can do with a gun during a robbery, treating it like a magic wand and waving it six inches in front of some one's face is number one. Stay back far enough that they are at least an arm's length away. Really. People actually train for this. You cannot stop someone from taking the gun unless you are already pulling the trigger. It's not even difficult.
That's good advice in a defensive situation, too. Don't be close enough to have the bad guy put his hands on you or the gun and don't think pointing a gun is enough to deter everyone.
Second, in this case, the gun is out of battery. It's down, non-functional, no shooty.