Good article in Briarpatch:
What makes call-out culture so toxic is not necessarily its frequency so much as the nature and performance of the call-out itself. Especially in online venues like Twitter and Facebook, calling someone out isn’t just a private interaction between two individuals: it’s a public performance where people can demonstrate their wit or how pure their politics are. Indeed, sometimes it can feel like the performance itself is more significant than the content of the call-out. This is why “calling in” has been proposed as an alternative to calling out: calling in means speaking privately with an individual who has done some wrong, in order to address the behaviour without making a spectacle of the address itself.