One of the key concepts of my degree three and a half decades ago was "Repressive Tolerance"...

http://throughablogdarkly.blogspot.co.uk/2013/05/repressive-tolerance-and-free-speech.html

http://www.marcuse.org/herbert/pubs/60spubs/65repressivetolerance.htm

I understood it in my early 20s... but sadly I seem to be a bit too exhausted and thick to read it now I'm nearing 60... 😩