Question: The Jonestown conspiracy theories are often believed by proponents to be a covert example of a program of experiments on human subjects that was at times what?
Sentence (from "Jonestown conspiracy theories"): These theories often include the assertion that the events in Jonestown represented CIA efforts in mind control and/or similar modes of social experimentation, often believed by proponents of such theories to be a covert example of the notorious Project MKULTRA in practice.
Relevant evidence: Yes