Superhero aficionados have long seen Professor Charles Xavier and Magneto as metaphors for Martin Luther King Jr. and Malcolm X, respectively. But now the Marvel Comics characters are being associated with another 1960s icon cut down in his prime. 20th Century Fox is marketing its latest mutant movie, X-Men: Days of Future Past, with a website that links Magneto to the assassination of John F. Kennedy. It’s probably not a coincidence that this campaign began in the wake of the 50th anniversary and not in the weeks leading up to the somber commemoration. But, still, too soon? Nuff said!