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?

Context paragraphs:
GMO conspiracy theories: GMO conspiracy theories are conspiracy theories related to the production and sale of genetically modified crops and genetically modified food (also referred to as genetically modified organisms or "GMOs").  These conspiracy theories include claims that agribusinesses, especially Monsanto, have suppressed data showing that GMOs cause harm, deliberately cause food shortages to promote the use of GM food, or have co-opted government agencies such as the United States Food and Drug Administration or scientific societies such as the American Association for the Advancement of Science.  Critics charge that GMO conspiracy theories are largely promulgated by those opposing the production and sale of GMOs, and instances of unsubstantiated conspiracy theories have lately occurred in the context of public health issues that are mostly unrelated to GMOs, including the current Zika virus outbreak and concerns over food safety at Chipotle Mexican Grill.

9/11 conspiracy theories: 9/11 conspiracy theories are conspiracy theories that attribute the planning and execution of the September 11 attacks against the United States to parties other than, or in addition to, al-Qaeda including that there was advance knowledge of the attacks among high-level government officials.  Government investigations and independent reviews have found no evidence for the theories.  Proponents of these theories claim there are inconsistencies in the official conclusions, or evidence that was either ignored or overlooked.

Credit theory of money: Credit theories of money (also called debt theories of money) are theories concerning the relationship between credit and money.  Proponents of these theories, such as Alfred Mitchell-Innes, sometimes emphasize that money and credit/debt are the same thing, seen from different points of view.  Proponents assert that the essential nature of money is credit (debt), at least in eras where money is not backed by a commodity such as gold.  Two common strands of thought within these theories are the idea that money originated as a unit of account for debt, and the position that money creation involves the simultaneous creation of money and debt.  Some proponents of credit theories of money argue that money is best understood as debt even in systems often understood as using commodity money.  Others hold that money equates to credit only in a system based on fiat money, where they argue that all forms of money including cash can be considered as forms of credit money.

List of conspiracy theories: There are many unproven conspiracy theories with varying degrees of popularity, frequently related to clandestine government plans and elaborate murder plots.  Conspiracy theories usually deny consensus or cannot be proven using the historical or scientific method, and are not to be confused with research concerning verified conspiracies such as Germany's pretense for invading Poland in World War II.  Conspiracy theory is often considered the opposite of institutional analysis.

Masonic conspiracy theories: Masonic conspiracy theories are conspiracy theories involving Freemasonry; hundreds of such conspiracy theories have been described since the late 18th century.  Generally, these theories fall into three distinct categories: political (usually involving allegations of control of government, particularly in the United States and the United Kingdom), religious (usually involving allegations of anti-Christian or Satanic beliefs or practices), and cultural (usually involving popular entertainment).  Many conspiracy theory writers have connected Freemasons (and the Knights Templar) with worship of the devil; these ideas are based on different interpretations of the doctrines of those organizations.

Jonestown conspiracy theories: The Jonestown conspiracy theories are conspiracy theories centering on the Peoples Temple Agricultural Project and the Jonestown massacre.  Many proponents of such conspiracy theories contend that outside forces were involved in what occurred at the commune, including the massacre.  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.  It differs from "popular or scholarly explanations of what happened in Jonestown".

Conspiracy Encyclopedia: Conspiracy Encyclopedia: The Encyclopedia of Conspiracy Theories is a non-fiction reference book about conspiracy theories, with an introduction by editor Thom Burnett.  It was published in 2005 by Chamberlain Bros., and in 2006 by Collins & Brown.  Contributors to the work include Thom Burnett, Nigel Cawthorne, Richard Emerson, Mick Farren, Alex Games, John Gill, Sandy Gort, Rod Green, Emma Hooley, Esther Selsdon, and Kenn Thomas. The encyclopedia discusses 365 conspiracy theories, most of which are political.

Bullspotting: Bullspotting: Finding Facts in the Age of Misinformation is a book by Georgia attorney Loren Collins.  The book discusses the trends and psychology of conspiracy theorists as well as the conspiracies themselves, and the harm they cause.  Several of the conspiracy theories mentioned originate from the 9/11 Truth movement, whose proponents believe that the terrorist attacks on the 11th of September 2001 were an inside job executed by the American government, and from young-earth creationists, whose proponents hold that scientists are hiding information which would disprove evolution.

Project MKUltra: Project MKUltra, also called the CIA's mind control program, is the code name given to a program of experiments on human subjects, at times illegal, designed and undertaken by the United States Central Intelligence Agency.  Experiments on humans were intended to identify and develop drugs and procedures to be used in interrogations and torture, in order to weaken the individual to force confessions through mind control.

Belmont Report: The Belmont Report is a report created by the National Commission for the Protection of Human Subjects of Biomedical and Behavioral Research.  Its full title is the "Belmont Report: Ethical Principles and Guidelines for the Protection of Human Subjects of Research, Report of the National Commission for the Protection of Human Subjects of Biomedical and Behavioral Research".

Supporting paragraphs: Jonestown conspiracy theories Project MKUltra
Answer: illegal