Hoover worked closely with all presidents from [[Franklin D. Roosevelt]] and after, keeping track of political enemies of the presidents as well as threats to national security. He was especially worried about the ties of [[Martin Luther King]] to Communist leaders. | Hoover worked closely with all presidents from [[Franklin D. Roosevelt]] and after, keeping track of political enemies of the presidents as well as threats to national security. He was especially worried about the ties of [[Martin Luther King]] to Communist leaders. |