Of course it’s malicious. In context they were making a tongue-in-cheek joke intended to expose those that never heard about the MLK letter(s) to their existence.
In other news, I only learned about the assassination of Fred Hampton quite recently. That’s a fun one.
I am skeptical about FBI but 1969 was over 50 years ago and that was under Hoover. Different FBI now. They have jurisdiction over copyright issues so no need for any international intrigue. Maybe there actually is one here.