The effects of LSD (and whether or not I personally have done LSD) are completely irrelevant to your claim that it is Schedule I because it will "awaken the masses." I don't doubt that it can lead to meaningful introspection-- there are very reputable studies that show that psilocybin (the hallucinogen found in "magic mushrooms") does this for even non-drug users.[1]

The original claim which I was responding to is so baseless that I do not feel that the burden of proof is on my side.

[1] http://csp.org/psilocybin/Hopkins-CSP-Psilocybin2008.pdf

The original claim may be floridly expressed, but I don't think you can write it off as baseless.

Wouldn't you agree that one of the primary functions of government is to ensure social stability?

It would therefore be strange for governments not to try to control substances that had the potential to upset this. No conspiracy is required, just pragmatism.

Given that LSD advocates in the 60's and 70's loudly proclaimed its power to transform society, whether accurate or not, it would have been irresponsible for governments to ignore this.

Now I'm just plain puzzled as to why that was downvoted. Care to explain?

Although I think that LSD and other psychedelics have great potential for aiding therapy and introspection, I think there's a lot of evidence against the idea that it automatically 'wakes people up to the system'. It takes more than just the drug to do that.

I grew up in the UK, and witnessed the rave and drug scene from 1988 onwards. Millions of doses of LSD were consumed, and continue to be consumed. I don't see millions of people awakened to the system.

I'd bet that the net consequence of every single person in society dosing acid once, like the Merry Pranksters dreamed of, would have been more along the lines of a slight decrease in net societal productivity than a total counter-cultural revolution.