So this study kind of hints at it, but their (facebooks) algorithm worked exactly as intended. Showing users the stuff they want to see and that will keep them engaged. This has the unfortunate down stream consequence of radicalization of the consumer. I don’t recall the term exactly, but there’s a psychology term for groups that form and over time the members in the group tend to radicalize more and more. Us humans just did human things and we didn’t think about the group we’re trying to appeal to. You can see this on any left leaning political sub too. Rhetoric in both groups tends toward extreme especially with highly curated (eg. algorithms or upvotes) feeds. I don’t know how we can escape this other than cutting out constant political news out of our lives (which I have done and am much happier for).