A current example that the world is facing now: Corona Virus
Many anti-vaxxers and theories conspiracy followers I had read so many things they say on the net like: It changes your DNA, men wil get infertile in the long run, it is the new world order, it contains a chip, the Illuminati wants to control us, they want to control us, it is the Apocalipsis, they may contain "alien blood", this is the most stupid one I had read,. Another one is that Bill Gates and the big pharmaceutical companies are in agreement for something fishy in order to gain more money from this virus.
A senior lady who I know and care and who is very religious and she believes in God, she does not believe much in the vaccine cause she says it may be way for hospitals and doctors to track us down with a chip with our personal information the vaccine may contain and she stick by her theory and she won't like to be vaccinated.
Many people I have talked to say they believe people who mostly believe in conspiracy theories with no proof is beucase they have low level of education (im not saying this always apply I say this based on what I had read from many people) and they believe more in what people tell them in gossip or what they read in Fake facebook news, You Tube as many information posted there could be fake but they believe everything they read in the Internet rather to really inform themselves with reliable sources somewhere else. This also applies not only with the Corona Virus but in other conspiracy theories fields.
I mean really, Are some people that naive?
Well the Bill Gates, Big Pharma and Dr. Fauci collaboration with the WHO and Chinese government thing is actually extraordinarily well documented and is indeed fact that we know if happening. The purpose and intention of those relationships is debatable, but the relationships themselves are absolutely real. But the reason people believe in the more harebrained conspiracies is because there are gaps in the information we are being presented and the conspiracy theorists absolutely do not trust that the establishment has their best interest at heart. So those gaps become the place where people can project their fears because the gaps are naturally being supplemented and supported by material fact.
It's not like you can go up to these people and say "we know that the vaccines aren't secretly micro chipping people because Dr. Whozeewatzit, a 15 year veteran of the NIH says _____," because those people already don't believe that anyone from the NIH has their best interests at heart. This logical fallacy is called an "ad hominem argument," which basically refers to discrediting an idea because of who the idea came from, rather than addressing the idea itself.