Sweeping other people with the muzzle of your gun is to me Totally Unacceptable. Doesn't matter whether it's loaded, empty, shut or open. When one is looking at the gun from the muzzle end it's not always easy to tell whether it's loaded or not.
Besides if a person gets in the habit of being careless where an "Empty" gun is pointing they will eventually do the same with a "loaded" one. "ANYONE" who picks up a gun needs to be responsible as to where it's pointing, "PERIOD".

Miller/TN
I Didn't Say Everything I Said, Yogi Berra