Why did the government cover up the John F. Kennedy assassination?

Answer 1

They didn't.

The simple facts of this open-and-shut case are as follows: Lee Harvey Oswald, alone, fired 3 shots at the President, hitting him twice. It took the more advanced forensics of more modern times to explain the bullet path of the second bullet, as well as to prove there was a concrete wall between the President and the Grassy Knoll "sniper" location at the time of the third, and fatal, head shot. Oswald just wanted to get his name in the history books and did... there is no speck of evidence that he had or needed help.

The simple facts are not enough to satisfy some people. They dislike gays, or the CIA, or the Mafia, and to their mind, this constitutes proof that JFK was killed by a conspiracy of same. The fact there is no shred of solid evidence, let alone proof, of any of this, is not interpreted as proof the conspiracy theory is wrong... as always, the conspiracy theorists take the lack of proof as evidence that the conspiracy was *perfect*!