A deviation from the "What If" reviews, but seeing as how most of Vol. 2 has not been assembled into TPB form, I'm going to hold off on reviewing that series for a moment until I figure out an organized way of doing so. Anyway, this was originally published in graphic novel version (not regular comic book form) under the "Marvel Graphic Novel" series that ran between 1982-1993. This, in particular, is novel #5. It's considered a classic among many 80s X-Men fans, but IMO it has not aged so well over time. It definitely covers the "social" aspect of the series well (dealing with discrimination/racism/etc) but the villain comes off as a bit over the top - especially when it comes to his origins. X-Men regular Chris Claremont wrote this during the rise of the American "moral majority" era (1982), to provide some context to the story. The art is questionable, but that's because the original artist had to quit shortly after he began work on the comic due to contractual obligations, and his replacement was less than capable, it appears.
I know lots of X-fanboys cite this story as one of their top 20 or so X-Men plots, but to me it's a bit overwrought. C
(Parts of this comic [and the main villain] were used in the plotline to the movie sequel of "X-Men" called "X2", but quite a few details were changed due to chronological issues within the movie storyline.)