My hon. Friend raises a very important point. He is right that these protests are not costless. Aside from the costs to the businesses affected, there is a large overtime bill to be covered. Of all the costs, the most profound and alarming is the opportunity cost; those police officers who are spending time ungluing protesters and dismantling scaffolding are not spending time preventing knife crime, murder, rape or domestic violence. There are other much more vital activities that could be performed in the communities they serve.