One of Popper's students at the London School of Economics was William Warren Bartley III. According to Rafe Champion, Bartley, along with Popper, recognizes "the authoritarian way of thinking which charactorizes Western thought.The author understands that Popper was opposed to authoritarian ways of thinking.
What he doesn't understand is that citing Rafe Champion as an authority on what Popper and Bartley's positions are is itself an instance of authoritarian thought. And a very archetypical one at that.