One of the things we most need at this time—and I mean the past 36 hours, this year, and the 2020s so far—is the ability to internalise complex situations in our heads. The Prime Minister wants us to believe what Michael Wood said, that there's a "river of filth" running through the protest. I know Michael Wood. He's enough of a political tragic to understand the allusion to Enoch Powell's sinister speech when he said that.