My brother gave me his Facebook credentials so I could use marketplace without bothering him all the time. He’s been a liberal left-winger all his life but for the past few years he’s taken to ranting about how awful Democrats are (“Genocide Joe” etc.) while mocking people who believe that there’s a connection between Trump and Putin. Sure enough, his Facebook is filled with posts about how awful Democrats are and how there’s no connection between Trump and Putin - like, that’s literally all that’s on there. I’ve tried to get him to see that his worldview is entirely created by Facebook but he just won’t accept it.

In my mind, this is really what sets social media apart from past mechanisms of social control. In the days of mass media, the propaganda was necessarily a one-size-fits-all sort of thing. Now, the pipeline of bullshit can be custom-tailored for each individual. So my brother, who would never support Trump and the Republicans, can nevertheless be fed a line of bullshit that he will accept and help Trump by not voting (he actually voted Green).