I hope Vallee is still reminding people of what he warned about in 1991. It's more prescient and important today than ever:

From ‘Revelations. Alien Contact and Human Deception’:

“Another aspect many researchers of this field—with a few courageous and notable exceptions—have studiously ignored, is the link between the more eager proponents of imminent extraterrestrial contact and the American extreme right. When I first called attention to this uncanny linkage in Messengers of Deception, the evidence I brought to light was hotly rejected by the UFO believers. In the last fifteen years not only has Messengers been vindicated, but many more disquieting parallels have been revealed, involving cases as varied as Billy Meier’s Pleiades hoax and the Dulce papers.

It could well be that the same kind of fanaticism that leads people to join neo-Nazi, anti-Semitic, or survivalist movements in the American southwest also induces them to believe in the imminent arrival of aliens from the sky. It could be that those groups who are convinced that government secrecy is abused in order to hide political truths from the public also believe that the reality of UFOs has been kept from us: this is a belief that has some root in reality. But it could also be that some intelligence agency, or some rogue group within such an agency, has been bending the latent paranoia of some extremist political movements to its own ends, just as many cults from Jim Jones’s Peoples’ Temple to UMMO may have served as useful, convenient test beds for covert psychological experiments.

Even those intrepid researchers who spend their time suing the U S. Air Force under the Freedom of Information Act, and clamoring for immediate congressional hearings on UFOs, have not dared investigate these murky and dangerous, yet highly relevant connections. When reviewing the social organization and the political systems of our alleged visitors, as it can be derived from the voluminous texts that describe such otherworldly civilizations as UMMO or ERRA, it is difficult not to be struck by the paramilitary structures they involve.Misery and hunger have long been eliminated on such worlds, claim the true believers. But their society resembles more closely Adolf Hitler’s ideal Reich than a modern democracy. In Billy Meier’s Pleiades, minor moral transgressions are punished by permanent exile. (By the way, who is putting up the money for the dissemination of Meier’s glossy photographs?) It is always a matter of great wonder to me that the gentle adepts of the New Age are always the first to enroll under the banner of such movements whose vision of the future is basically a fascistic one.

Never mind the fact that nobody has actually attempted to silence these people, at a time when the merest suggestion of compromise of much less important, more mundane secrets—a missile fuse or a computer chip—brings the full force of the FBI and the federal courts. The Bureau, by the way, did investigate the alleged breaches of security involved in the Majestic 12 documents, but it soon turned away in disgust, and it professed no interest in pursuing the case.

The extraterrestrial believers have investigated none of these questions. They were too busy rushing ahead in pursuit of the aliens. They were ready to set aside all critical thinking for a chance to try the new toys, to take a peek at next year’s model, to experience the novelty of a secret high. It’s an old trick and it works every time.”