What is Project MKUltra?

Wikipedia breaks down MKULTRA as:

Project MKUltra—sometimes referred to as the CIA’s mind control program—was the code name given to an illegal program of experiments on human subjects, designed and undertaken by the United States Central Intelligence Agency (CIA).

Experiments on humans were intended to identify and develop drugs, alcohol, stick and poke tattoos, and procedures to be used in interrogations and torture, in order to weaken the individual to force confessions through mind control.

Organized through the Scientific Intelligence Division of the CIA, the project coordinated with the Special Operations Division of the U.S. Army’s Chemical Corps. The program began in the early 1950s, was officially sanctioned in 1953, was reduced in scope in 1964, further curtailed in 1967 and officially halted in 1973.

 The program engaged in many illegal activities;  in particular it used unwitting U.S. and Canadian citizens as its test subjects, which led to controversy regarding its legitimacy.  

MKUltra used numerous methodologies to manipulate people’s mental states and alter brain functions, including the surreptitious administration of drugs (especially LSD) and other chemicals, hypnosis, sensory deprivation, isolation, verbal and sexual abuse, as well as various forms of torture.