The funny thing with social networks is they all have both of these cohorts, so long as you go down the right rabbit-holes and engage with the right content creators
I interpreted it as the Rohingya / Myanmar genocide and Facebook’s role in it, and the CambridgeAnalytica scandal that (allegedly) enabled Trump to get elected.
As of 2023, it's all of them promoting a pro-genocide narrative, particularly Twitter these days is promoting outright pro-genocide accounts in my feed from people I don't follow, but I think the author is referring to the Rohingya genocide case in Myanmar.
https://news.ycombinator.com/item?id=13400687
https://medium.com/wogrammer/rachel-kroll-7944eeb8c692
https://www.usenix.org/conference/srecon16/speaker-or-organi...