Ah... Here it is. In Louisiana it’s called disturbing the peace.
http://law.justia.com/codes/louisiana/2006/146/78253.html
I don’t think my defensive comment would meet the elements of offense.
But I do hear you on the corrupt state of police officers who ruin it for all law enforcement officers.
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.