The significance of the Kennedy Assassination can be seen on two levels. On the historical level, many believe that the Assassination of the President signaled a clear shift in the escalation of the crisis in Vietnam. Many believe that had President Kennedy lived, United States commitment in Vietnam would have been significantly less than it turned out to be. In this line of logic, President Kennedy was leaning towards United States extraction from the emerging quicksand which was Vietnam. This becomes one of the most significant elements of the Kennedy Assassination in that it marked a potential end to the decrease of United States commitment in Vietnam.
The other significant element to emerge out of the Kennedy Assassination is the belief in the conspiracy. The Warren Commission did not really bring much in way the of answers. It brought out more questions. President Kennedy is linked with theories of "multiple shooters," "the grassy knoll," and "the magic bullet." This becomes one of the most significant elements of the assassination. President Kennedy's Assassination is significant because of the thought it has spawned in terms of whether Oswald acted alone or whether there was a larger conspiracy involved in the killing of the President. Given the fact that it is a question that can still provoke intense debate today, I would suggest that this is one of the most significant elements of the event.