I just had a thought like "What if some UFO aduction experiences people claim to have are actually people being kidnapped by the CIA" 
The kind of stories I'm thinking about often go like: "I was driving on an empty road in the middle of nowhere. I saw a bright light," and then either "I remember nothing but had lost time" or "I remember being experimented on by aliens and then put back in my car."
My tinfoil hat side is thinking like, these stories started happening around the time the US admitted to experimenting with abuse, torture and psychoactive drugs in Project MK-Ultra. Alien abduction stories were the most prevalent during this time. (CW: Just a heads up. If you want to read the rest of this post or anything else about MK-Ultra, be warned that it's pretty horrible, and involves some of the most disgusting torture I have ever read about. Death to America.)
Of the surviving documents released to the public about MK-Ultra, the CIA admits to: "kidnapping people it deemed "expendable" to undertake various types of torture and human experimentation on them. The prisoners were interrogated while being administered psychoactive drugs, electroshocked and subjected to extremes of temperature, sensory isolation and the like to develop a better understanding of how to destroy and to control human minds."
Part of me wonders how many of these alien abduction stories are just people being kidnapped, drugged with powerful hallucinogens, experimented on and then released with the suggestion conditioned into their mind that it was aliens.
The most famous alien abduction story is that of Barney and Betty Hill, an interracial couple that were both civil rights leaders, definitely people that the CIA would want to fuck with, especially during rising tensions with the Soviet Union, the US government was suspicious of minorities and anyone interested in their rights.
The organ harvesting conspiracy theory is not true. Falun Gong is a Chinese cult that is racist and anti-science. JJ McCullough, a center-right youtuber I disagree with quite often, has made a good video about the Falun Gong and their claims of organ harvesting. The critical point is right here. Also, Wikipedia is not a good source in general for political knowledge, as politics are very contentious and it's hard to find the truth there. It's a good place to start, but you should look in the references part of the article for primary sources and check those instead. You can then evaluate the reliability of those sources. If the source is InfoWars, then it's probably not a great source. The same goes for a site like Radio Free Asia, which is a U.S. propaganda site directly funded by the U.S. government.
Bruh that's literally an Internet reply hastily written at midnight when I should've gone to bed 2 hours earlier abour a subject I only know of from reading the news 3 years ago, not a research paper. I did a quick Google (and saw plenty of reliable news sources and a meeting announcement by the United States House on the subject), incorrectly merged two likely separate genocides in my tired brain and tapped out a hasty reply as a friendly "uh check your sources on that one" i also selected Wikipedia as the article to link after glancing at its sources and specifically instructed to "read through the references and Google a little."
Human Rights Watch, Reuters, CNN and The Washington Post all reported very clear evidence of this involuntary organ harvesting from political prisoners. They clearly state their evidence (none rely on vague "sources") and none of the articles contain retraction notices nor significant corrections. As a dude who fixes computers for work and may never leave the North American continent that more is good enough for me to trust as I adapt my world view to new information.
And most importantly if you do the same level of research I just did for the other conspiracy the first-level poster mentioned (the well-debunked claim of "vaccines causing autism") you will come away far sooner with the correct conclusion that not only are vaccines overwhelmingly safe and effective, but there is no correlation, no method and no evidence for vaccines causing autism. My original point that I wanted to make was that the poster grouped a heavily debunked conspiracy theory with a plausible claim that has good evidence supporting it as if both are equally clearly false.