The 60s assassinations
The context, the FBI is in the middle of the hidden project COINTELPRO which is targetting illegaly members of the american left wing.
Let’s recapitulate the assassinations.
Fred Hampton : targetted and harassed by the FBI, executed, most, probably by the FBI
Mark Clark : targetted and harassed by the FBI, executed, most, probably by the FBI
Martin Luther King Jr. : targetted and harassed by the FBI, assassinated, most probably the FBI
Malcolm X : targetted and harassed by the FBI, assassinated, most probably by the FBI (“With assistance from the Manhattan district attorney's office, lawyers for Aziz and his late co-defendant Khalil Islam (formerly Thomas 15X Johnson) uncovered proof that the FBI and NYPD withheld key evidence from the March 1966”, from Muhammad Abdul Aziz Wikipedia page)
John F. Kennedy : represented everything that J. Edgar Hoover hated
Robert F. Kennedy : represented everything that J. Edgar Hoover hated
Even in the Soviet Union—according to a memo by FBI Director J. Edgar Hoover—news of the assassination "was greeted by great shock and consternation and church bells were tolled in the memory of President Kennedy".
From the Wikipedia page of Kennedy's assassination.
Someone is trying to say that Kennedy was a communist.
That someone is FBI director Hoover.
What is strange, is that even though everybody knew the FBI was used to fake evidences or make false statements, they would still be directing investigations.
It’s interesting to note that most of this assassinations are connected to the FBI and belong to the left wing that the FBI targetted and harassed.
Post scriptum
[A]bout five minutes later, a most incredible scene took place. Into the hall sauntered about a dozen policemen. They were strolling at about the pace one would expect of them if they were patrolling a quiet park. They did not seem to be at all excited or concerned about the circumstances.
I could hardly believe my eyes. Here were New York City policemen, entering a room from which at least a dozen shots had been heard, and yet not one of them had his gun out! As a matter of absolute fact, some of them even had their hands in their pockets.
From Malcolm X Wikipedia page.