Something else that can be done is to ridicule the left. Take every idea they have and run it out to its logical conclusion. Slide down every slippery slope they create.
When the great revolution/civil war breaks out and starts winding down; one of the first things that need to be done is to isolate those who this article talks about and all far leftists. Maybe a state like Washington, Illinois, and NY/CN/MA. Run them out of the rest.