Proof of actual malice, or even establishing that an attack in ridicule bears no relation to public conduct, seems at best, extremely difficult to bring out. The public interest in protecting itself, through criticism of those in prominence, weighs much more heavily on the scales of justice than does the interest of public figures in protecting themselves from personal attack. So go ahead and draw your cartoons, Conrad. Keep sticking pins in the kewpie dolls of America, Art Buchwald. And tell it like it is, Pogo.
James M. Naughton & Eric R. Gilbertson, Libelous Ridicule by Journalists, 18 Clev.-Marshall L. Rev. 450 (1969)