Doonesbury by Garry Trudeau for May 22, 1975
Mark: "Did anyone ever stop to ask why we were involved in this fratricidal craziness? Did anyone ever care about the victims? In the final analysis, where did the responsibility really lie? Who made Vietnam happen? Who was really to blame?! Who?!" Noise: Riiing! Riing! Voice: "All of us"? Mike: All of us? Mark: "All of us" is right! Noise: We've got a winner!