The original criticism:
"Norse mythology gets a multi-cultural remake in the upcoming movie titled “Thor,” by Marvel studios. It’s not enough that Marvel attacks conservative values and promotes the left-wing, now mythological Gods must be re-invented with black skin.
It seems that Marvel Studios believes that white people should have nothing that is unique to themselves. An upcoming movie, based on the comic book Thor, will give Norse mythology an insulting multi-cultural make-over. One of the Gods will be played by Hip Hop DJ Idris Elba.
A black Nordic God is certainly a strange idea but nobody is allowed to say so apparently. You get called a "white supremacist" if you do. A brief summary of some of the outrage here
There seems to be particular rage over the fact that the conservative group called for a boycott of the film. Leftists are always trying to mount boycotts of people and firms that they do not like but conservatives are not allowed to do likewise, apparently.
As far as I am concerned, I would be glad of the information that the film is badly cast and would not go to see it on those grounds -- if I was into that sort of thing
By all their wailing and shrieking the Left have certainly seen to it that the boycott call is widely publicized -- which is amusing.