It's subtle but if you read between the lines, the FBI basically told MLK Jr. to commit suicide for the good of the country. You know, because he was a black man with alleged ties to the Communist Party. I'm glad he didn't because, among other things, it opened the doors for another black man (who is often accused of being a communist by the wingnuts at Fox News) to become president in 2009.
The last paragraph reads as follows: "King, there is only one thing left for you to do. You know what it is. You have just 34 days in which to do it (this exact number has been selected for a specific reason, it has definite practical significance). You are done. There is but one way out for you. You better take it before your filthy, abnormal fraudulent self is bared to the nation."