I'm not generally a contrapoints fan, but I really enjoyed the video she made about her experience with this on twitter:
https://www.youtube.com/watch?v=OjMPJVmXxV8
Or the TED talk "How one tweet can ruin your life" from 2015:
https://www.youtube.com/watch?v=wAIP6fI0NAI
We studied To Kill a Mockingbird and The Crucible when I was in highschool. I remember thinking how barbaric and despicable "mob justice" was. I didn't understand it, and I assumed I never would - I thought it was something we reference from history. But twitter really has brought the mob justice style witch hunts back.
I don't understand how anyone can claim its not a real phenomenon. Being cancelled is obviously quite a real experience for the people it happens to.