Do you recommend any resources that I can read regarding the defanging of unions?
Today it's less physically violent, but if you get a job as a floor worker at a big company like Walmart, you've got mandatory videos about how terrible unions are. And yes, you will be fired if the word 'union' comes out your mouth on company property.
The telling of the stories includes a lot of the strategy and tactics, legal and otherwise, of busting unions down to where they are now.