I didn’t say he was talking about progressives today, I said what he talked about is applicable to progressives today. When Popper uses the word “tolerance” he’s talking specifically about people who don’t tolerate a free society with free debate, not people who express intolerant views. For example, the Trump voter who is intolerant of immigrants isn’t “denouncing all argument” about immigration. It’s progressives who do that.

I didn’t say Popper would entertain free debate with a Nazi. My point is that, under Popper’s framework, there’s a huge incentive to declare anyone you don’t like to be Nazis, and reframe speech as tantamount to threats to physical safety.