A pair of thugs had no idea what was coming to them when they attempted to rob a nearly empty restaurant.

In a video posted to Facebook by FourGuysGuns on March 17, two would-be robbers entered the restaurant and began to push the one customer seen on-camera into a corner.

But according to Controversial Times, the robbers who struck the Subway restaurant in Sao Paulo, Brazil, in January, 2016, picked exactly the wrong time to commit their crime, because the customer in question turned out to be an off-duty policeman, and armed for action.

You can see the robbery attempt and takedown here (WARNING: graphic content might be disturbing to some viewers):

The condition of the man who was shot was unclear, but LiveLeak reported that he died from the gunshot wound.

This is what happens when law-abiding citizens are responsibly armed.