Doonesbury by Garry Trudeau for January 18, 1974
Man: Well, kid, we're gettin' pretty close to Akron. Geez-Louise! My heart is goin' a million miles an hour! I jus' dunno what I'm gonna do if some cop tries to beat on me... Mark: Well, for openers, man, you can't call him a policeman! You have to call him a pig! Man: "Pig"? Gee, I dunno... Mark: Look! Are you committed or not?!