Brilliant speech. He is referring to Karl Popper there with the intolerance of intolerance. 

I came across that argument a few years ago. It is a ridiculous concept in my view. 

 Agree 💯. I was watching a video that explains this argument and I swear the guy said tolerant and intolerant so many times I started to question the word 🤣👀

https://youtu.be/VPhaZDuwDsU?si=uxqp4mU62nv9CtzC