Now, there will undoubtedly be a range of inquiries into the protests over the coming months to see what could be done better when—or if—there is a next time. Could the police have intervened earlier or differently? Should Parliament have a wall around it? Is it ever OK to play Barry Manilow? But these questions are all about how we treat the symptoms. What I'm interested in is preventing the disease from overtaking us in the first place.