Here's a quick summary from wikipedia...
Project MKULTRA, or MK-ULTRA, was the code name for a CIA mind-control research program that began in 1950, run by the Office of Scientific Intelligence.. There is much published evidence that the project involved the use of many types of drugs, as well as other methodology, to manipulate individual mental states and to alter brain function.
Here are some primary sources:
Entire CIA MKULTRA Collection
Declassified MK-Ultra Project Documents:
When the whole thing was originally brought to light:
Start reading from this page of the Church Committee Report and keep reading:
XVII. TESTING AND USE OF CHEMICAL AND BIOLOGICAL AGENTS BY THE INTELLIGENCE COMMUNITY (p. 385)
The first mention of MKULTRA itself would be on page 389:
You'll also want to look at:
PROJECT MKULTRA, THE CIA'S PROGRAM OF RESEARCH IN BEHAVIORAL MODIFICATION
WEDNESDAY, AUGUST 3, 1977<
SELECT COMMITTEE ON INTELLIGENCE,
AND SUBCOMMITTEE ON HEALTH
AND SCIENTIFIC RESEARCH
OF THE COMMITTEE ON HUMAN RESOURCES
Prepared Statement of Admiral Stansfield Turner, Director of Central Intelligence
Now I'm sure there's a bunch of idiots who'd like to do the hand wavey thingy and waaail "conspiracy theory", but they can't. It's too well documented.
Shit like this does and has happened.
Deal with it.