Various groups believe that John F. Kennedy was the victim of a conspiracy.
Hub-and-spoke conspiracy, a conspiracy in which one or more principal conspirators (the "hub") enter into several similar agreements with others (the "spokes") who know concerted action is contemplated, usually where the success of the concerted action depends on the participation of the other spokes
 For example, intelligence agencies such as the American CIA and the British MI6 necessarily make plans in secret to spy on suspected enemies of their respective countries, but this kind of activity is generally not considered to be a conspiracy so long as their goal is to fulfill their official functions, and not something like improperly enriching themselves

