I walked down Villiers Street to Embankment Tube station. In front of me were two Extinction Rebels, a mother and daughter. Strapped to the little girl’s back was a white teddy bear. Strapped to the bear’s back was the handwritten slogan: ‘You selfish gits. Stop burning down my house.’ I wonder how they knew I was a selfish git, since I wore no emblem to announce the fact.