"The X-Men are hated, feared and despised collectively by humanity for no other reason than that they are mutants," Chris Claremont, a longtime X-Men writer once said. "So what we have here, intended or not, is a book that is about racism, bigotry and prejudice."

In many stories, those themes are underlined and circled using language from the real world. The X-Men's leader, Charles Xavier, and Magneto, his nemesis, are on opposite sides of an ideological debate over whether they should try to integrate with humans or not. They're referred to by writers and fans explicitly as analogs to Martin Luther King and Malcolm X. In the first second X-Men movie, a teenager revealed that he was a mutant to his parents in a scene that was framed as a kind of coming out. ("Have you ever tried...not being a mutant?" his mother asks.)

But an artist named Orion Martin noted that the X-Men comics have skirted around the depiction of the people on the receiving end of much real-life discrimination: the main lineup in the X-Men team has been mostly straight, white dudes. Martin nodded to the work of Neil Shyminsky, an academic who's written about the X-Men's complicated relationship with real-life racism:

[He] argues persuasively that playing out civil rights-related struggles with an all-white cast allows the white male audience of the comics to appropriate the struggles of marginalized peoples ... "While its stated mission is to promote the acceptance of minorities of all kinds, X-Men has not only failed to adequately redress issues of inequality – it actually reinforces inequality."