"Keep It Quiet" joke

The following story was reported some years ago in the Las Vegas Sun:

A man approached the cashiers' cage at Binion's Horseshoe in downtown Las Vegas, pulled a shotgun and was given an amount of cash. (Note that casino cages are located at the rear of the casino to discourage such activities.)

The man tucked his shotgun under a trench coat and started to walk casually out of the casino. He was immediately surrounded by casino guards who walked with him so as not to cause a scene.

Evaluating his situation, the man entered the casino and sat down at a card game in progress. He remained seated there for several hands, still surrounded by security personnel. The game continued uninterrupted.

Finally, perhaps with the thought of creating escape-aiding confusion, the man upended the table sending cards and chips flying. He was immediately set upon by the card players who had to be restrained by the security guards from killing the interloper.

The game resumed shortly thereafter and the thief was taken to the hospital.