The Mystery Surrounding President John F. Kennedy's Assasination

Forty-Nine years after the fact, Americans are still suffering considerable consternation surrounding The Mystery Of President John F. Kennedy's Assassination! Moreover, as time has substantially passed, Certain Easily Obtained: Textual, Audio, and Video Footage - seemingly displays a previously unknown Cause and Effect relationship between what Kennedy had previously alluded to [or stated], prior to his immediate assassination soon after. For instance, his curious political address - which addressed certain very interesting and mysterious political topics - that has never been alluded to again, by any other sitting United States President!

What inside knowledge [or damning political evidence] did President John F. Kennedy have against "The Freemasons" and More Numerous Other "Secret Societies" operating within America? If such information was considered to be of preeminent importance to a sitting and afterward assassinated United States President, then why should it be clearly unimportant to those who so effectively replaced him - after his death? Unless, of course, they have a highly vested interest in covering up these mysteriously mentioned political details! Perhaps, more importantly, why have the details surrounding President Kennedy's death been sealed by the political actions of our own government?