there is a long history of trying to deny the jewishness of jesus. this loud, violent yelling through megaphones on the streets that jesus was not a jew but an arab, a group that did not enter the region for several centuries after his death, belongs in the same ideological and intellectual category as blaming the jews for killing jesus, a catholic position that led to pogroms and holocausts.
these people are not leftists, they are nazis and they should be aggressively labelled as what they are.