I'm not sure how to actually arrange circumstances in such a way that this would happen, so I might be suggesting something truly implausible. But given Hoover's influence over the way the FBI handled and reacted to the Civil Rights movement among other causes, I was wondering what the impact of his death during the Johnson administration might have been. Let's say he dies sometime after Tolson's 1964 stroke, during the aforementioned administration. What happens to the FBI, and the nation as a whole, as a consequence of Hoover's earlier removal from the political scene?