The Social Dilemma was very good.
My comment was more in tune with how stupid Americans have become in the face of the massive amounts of information available. Understanding that social media has an important role in that influence, dumbing-down and polarization, it seems that most have lost the ability to think critically and make up their own mind.
You hit the nail on the head here. There are far too many people that simply believe what they are told, even when it contradicts what is right before their eyes or even their own memories of what happened. Unfortunately, the need for people to think for themselves has never been greater.
The thing that I find even more frustrating is how incredibly arrogant people are even when they know next to nothing about the subject they are speaking about. Humility seems to have went away too when critical thinking was lost.