On April 4, 1968 Martin Luther King was assassinated. Along with the assassination of President Kennedy, the King assassination is a prominent topic in the Hall Hoag collection (there is also a lot of material about King in general). Figures that transcend politics like King or Kennedy became shorthand for a set of ideals that Americans either agreed with or disagreed with and this was no different for extremist groups. King’s importance in American history cannot be understated making him a prominent figure for both right and left wing groups. His assassination also opened the door for a different type of extremism, the conspiracy.
The item shared today comes from The New Federalist which was a publication operated by Lyndon LaRouche[1]. LaRouche and his publications are basically impossible to pin down and classify. He is one of the true anomalies in American extremism. He has been on both the left and right side of politics, has operated some large organizations, and ran for president in each election from 1976 until 2004, but most people have never heard of him. The article here is a conspiracy theory surrounding the King assassination (from 1996), but conspiracy is only one of many topics covered by The New Federalist. For more information on LaRouche I suggest reading the link above. It will be worth your time.
[1] http://en.wikipedia.org/wiki/Lyndon_LaRouche