Cameras! Put cameras with every cop, and everyone, cop and robber and civilian, will know that whatever goes down, goes before a judge by and by.

Experience with cameras confirms what logic predicts: much less trouble all around. Most everybody is on their best behavior when they know the whole world will be watching if there’s trouble.

This time, the cop didn’t unload the whole clip into the poor guy. Because why? Maybe because he came to his senses. Or maybe because he knew it was all going on tape.