[davorak]

I would bet $100 to $10 that the article is not trying to describe any form of illegal behavior with the term subtle-ism.

[wmj]

It most certainly is.

Shaming and defaming someone of a crime that they didn't commit, and mobbing them out of their right to defend themselves publicly (the school's policy amounts to collusion with the shamer/defamer) is most certainly illegal.