My father reminisces
As a student, in about 1960, I participated in a sit-down street demonstration with the very elderly (I think he was 90) Bertrand Russell. It was either about the Congo or anti-nuclear. Sat right next to him, only two feet away, but was too shy and over-awed to speak to him.
The cop who carried him away remarked how light he was, to which he replied that he was just as light when he was young, but no-one had wanted to carry him then.