I would say in all honesty about this, if this had been different, and he were in a Chinese PLA uniform, green cap with Red Star, made out as Mao Tse Tung, or with a beard and fatigues looking like Fidel Castro, and the worldwide media had made a stink about it, then I'd say they ought to go after him for this. But since the media would NEVER make an issue if he dressed up as Marx, Lenin, Stalin, Castro or Mao, let's just DROP IT.
Probably no fuss either if he dressed up as Manson or some other mass murderer.