It looks like Erik Lehnsherr a.k.a. Magneto was responsible for the loss of JFK, at least according to this clip courtesy of The Nerdist. The turns out to be only one part of a much bigger Fake “expo” that goes into depth with some great fake history. At the end of the video it shows you a link to a site called “The Bent Bullet” where you can find the video and the impressive fake article/essay covering the “JFK and the Mutant Conspiracy”, along with some nice interactive slide shows. I have to say they have gone all out with this viral marketing.
Caption for the video reads:
Half a century ago, Magneto was implicated in the mutant plot to assassinate President John F. Kennedy. The events of that fateful day in November have been a point of contention between humans and the mutants ever since.