In his 2013 book, Conspiracy Theory in America, author Lance deHaven-Smith traced the term “conspiracy theory” back to a CIA propaganda campaign that was designed to discredit doubters of the Warren Commission’s fake search into who assassinated President Kennedy in Dallas. In this light, the use of this pejorative term is obviously a tactic to shame and humiliate those who saw through the ulterior motives of the commission, and thus effectively censor out or even banish anyone who questions official government accounts.

The Warren Commission, to its eternal shame, ignored the testimony of a multitude of eye witnesses to the crime that proved that there were shooters both behind and in front of Kennedy’s motorcade. Many witnesses, none of whom were called to testify, had heard shots coming from the grassy knoll in front of the motorcade.

One of those eye-witnesses was an emergency room physician that attended Kennedy’s dying body. He would have testified to the commission that there was a tiny entry wound in JFK’s throat as well as a large exit wound that blew off the back of his head (depositing a chunk of his brain on the trunk of the limousine – which Jackie was shown retrieving in the famous film of the assassination by Abraham Zapruder).

Anyone with discerning eyes saw JFK’s head being violently thrown backwards from the head shot, thus proving that that shot had come from the front (as did the neck shot), thus disproving the single shooter theory and proving that the assassination of the president was indeed a conspiracy (i.e., more than one entity plotting an evil deed).

Hence the CIA’s cunning ploy (with the pejorative “conspiracy theorist” label) to discredit those who had taken on as their duty to be skeptical of what was indeed another of the Big Lies that regularly come from political entities that want our trust and votes; from advertising campaigns from corporations that want our trust and money; from government and military entities that want our trust and support; and from the for-profit media entities that want our trust and money. All those entities had to be involved in the crime and cover-up of the events of 9/11/01.

From: http://rinf.com/alt-news/politics/cias-invention-conspiracy-theorist-smear-campaign-discredit-dissenters/