In a letter to MSNBC's Olbermann, the ADL states their "deep dismay" with the "use of the Nazi 'Seig Heil' salute." Olbermann used the gesture while holding up a mask of O'Reilly during a recent Television Critics Tour.
Olbermann was quick to explain his actions to TMZ, saying "I did that in the persona of Bill O'Reilly because he's been defending the Nazis at Malmedy for the last year." (The so-called 'Malmedy Massacre' of American POWs by German troops occurred during the famous Battle of the Bulge in World War II.)
The ADL, however, claims any use of the Nazi gesture "Even in jest - only serves to trivialize the Holocaust, and denigrate the memory of the six million Jews and others who died as a result."
Since their heated feud began, O'Reilly has referred to Olbermann - although not by name - as a "notorious smear merchant." Olbermann has named O'Reilly his "Worst Person in the World" at least 15 times.