*As Idris Elba prepares for the release of “Thor” (see trailer below) in which he plays the role of all-seeing Heimdall, he’s also readying himself for a battle against fans who disagree with the part.

“Pure-fan” comic-bookers say its quite disrespectful to have a black man play the role of a character rooted in Norse mythology.

Elba, 38, says it’s just outright racism talking.

“Purist comic-book fans are one thing,” said the 38-year-old actor in an interview with L.A. Times, “Out-and-out racism is another… Of course, the more I speak on this topic, the more I fuel it. But, look, if people have a problem with me playing the character, just don’t go see the movie, you know?”

Well, they may do just that. There is a website petitioning fans to boycott the film for inserting “left-wing social engineering into European mythology.”

Check out the site here.

“Thor” opens this weekend.

Meanwhile, Elba’s career keeps moving forward. He just finished filming Ghost Rider: Spirit of Vengeance  which is slated for release in 2012.