Wikipedia is one of the major players when it comes to how 90% of the population using google search for terms or events they have never heard of before.
Not only has wikipedia a quasi monopole in the encyclopedia market, it is also a pseudoencyclopedia only posing as a neutral source whilst using its "street credibility" from the science or medicine articles to shove sickest propaganda in the history / political department down our throats.
Wikipedia is an anti-redpilling tool and there are evil forces at work guarding topics like 9/11, deepstate, pizzagate and others like hellhounds.
A German freelance journalist tream has done some probes into this swamp and what they found is not only depressing, its a highly professionalised and ideologic network of accounts ganging up on everybody trying to edit what is against their opinion.