Doonesbury by Garry Trudeau for March 12, 1971
Transcript:
Calvin: Mr. President, I assume you are aware of the rally we have planned for next Saturday... President: Yes, Calvin? Calvin: I have here a statement expressing your skepticism that a black revolutionary can get a fair trial...if you sign it, I can guarantee no violence this weekend, thereby making you a national folk-hero for keeping the peace. President (Right on.)