Forget the tenses! Go for the senses.
The meaning is that when a person is caught performing an action the viewer does not like then the viewer publishes the persons identity so that others may also respond.
In old western movies when someone was seen to be doing the wrong thing some citizen would gather as many people as possible and confront the wrongdoer. This often ended in the wrongdoer being "lynched" - hung without trail. Sort of like stoning anyone you don't like.
- For Teachers