Facebook has studied extremism on their platform and they disagree:
> The high number of extremist groups was concerning, the presentation says. Worse was Facebook’s realization that its algorithms were responsible for their growth. The 2016 presentation states that “64% of all extremist group joins are due to our recommendation tools” and that most of the activity came from the platform’s “Groups You Should Join” and “Discover” algorithms: “Our recommendation systems grow the problem.”
I really don't know how you solve this problem because finding people like you is like the #2 reason you even join a social network. Same with IRL social networks. I can't even imagine how much worse my life without the online queer community, it only exists at all because these kinds of algorithms connect people who would never find each other IRL because of fear and physical separation.
Plus this is a very narrow interpretation of the problem. The public discourse issues comes from friends, family, friends-of-friends sharing and spreading articles from the news, obviously fake rage-bait memes, and generally just having an audience for their opinions.
> The high number of extremist groups was concerning, the presentation says. Worse was Facebook’s realization that its algorithms were responsible for their growth. The 2016 presentation states that “64% of all extremist group joins are due to our recommendation tools” and that most of the activity came from the platform’s “Groups You Should Join” and “Discover” algorithms: “Our recommendation systems grow the problem.”
https://www.wsj.com/articles/facebook-knows-it-encourages-di...