I see nothing wrong with your comment, and I’d have said the exact same thing. After making sure there weren’t any cops within earshot. If there weren’t any within eyeshot, either, I probably would have shown the bum what a 9mm Ruger looks like.
And in Louisiana you would have been within your right to do so. And if I saw you do that I would applaud you.
If anything, the drunken bum met the elements of the offense... But if I notified an NOPD officer, he probably would say “Not Our Problem, Dude.” high rates of reported crime is bad for tourism, you know.