MK-Ultra was a top-secret program run by the CIA from the 1950s to the 1970s, aimed at developing techniques and technologies for mind control and behavior modification. The program was initially revealed to the public in 1975, when it was exposed by investigative journalist Seymour Hersh. The methods used in MK-Ultra were highly unethical and included the use of drugs like LSD, hypnosis, electroshock therapy, and sensory deprivation. Many of the test subjects were unaware that they were being experimented on, and some suffered lasting psychological damage as a result. MK-Ultra was interested in using these techniques on American citizens to control and manipulate their thoughts and behaviors. The full extent of the program's activities and effects may never be fully known, as many of the records were destroyed or classified as top secret. However, it is clear that MK-Ultra had a lasting impact on the fields of psychology and psychiatry, and raised serious questions about the ethical implications of scientific experimentation on human subjects. The program's legacy lives on in the ongoing debate over the ethics of scientific experimentation on human subjects and in the enduring fascination with the program's dark secrets and conspiracies.