Doonesbury by Garry Trudeau for July 13, 1971
Transcript:
Mark: Hi, Dad! Dad: Hullo, son. Have a nice day at work? Mark: It was alright...Dad, you remember Calvin, don't you? My friend from the Black Panthers... It's O.K. if he stays for dinner, isn't it? Dad: I suppose. Ah, excuse me for a moment. Throw on some fried chicken.