Homicide: Life on the Street, Season 5

Lewis:
[to Luther Mahoney] I remember when I was workin' as a beat cop. Our job was to clear the corner. No big deal. Just tell people to move along and most of the time, the police tell you to move along, that's what you're gonna do, you're gonna move along. But every once in a while, there's gonna be some knucklehead fool, wanna keep standing on your corner talking trash. And he told me, don't you ever, ever, let some knucklehead stand on your corner and shame you. Cause once you've done that, you're done as a beat cop. So what he suggested I do, was that I take out my billy club and smack him upside the head so hard, that everybody who heard it knows who had the last word... Luther, you're on my corner.