Click here to access article by Jay Janson from OpEd News.
With time running out, I was only able to scan this; however it appears to offer a lot of information regarding his assassination on April 4, 1968 by agents working for the government in order to shut him up. An excellent book on this subject is An Act of State by William Pepper.
Remember: the ruling class always writes our history to reflect their interests. We must constantly be on guard to salvage our history for future generations.