"[W]hen we assembled in Trafalgar Square there was a great crowd. Precisely how great it was, it is impossible to say. The median number as reckoned by the press and the police and the Committee made it about 20,000. The speeches went well and quickly. Then began the march up Whitehall preceded by a large banner and managed with great skill by the Committee's marshals. It comprised a surging but calm and serious crowd of somewhat over 5,000 of those who had been in the Square. At one point we were held up by the police who tried to stop the march on the ground that it was obstructing traffic. The objection, however, manifestly did not hold, and the march proceeded. Finally, over 5,000 people were sitting or lying on the pavements surrounding the Ministry. And there we sat for about two hours till darkness had fallen, a very solid and quiet, if not entirely mute, protest against governmental nuclear policies. A good many people joined us during this time, and more came to have a look at us, and, of course, the press and TV people flocked about asking their questions. As soon as word came that the marchers had all become seated, Michael Scott and Schoenman and I took a notice that we had prepared and stuck it on the Ministry door. We learned that the Government had asked the Fire Department to use their hoses upon us. Luckily, the Fire Department refused. When six o'clock arrived, we called an end to the sit-down. A wave of exultation swept through the crowd. As we marched back towards Whitehall in the dusk and lamplight, past the cheering supporters, I felt very happy – we had accomplished what we set out to do that afternoon, and our serious purpose had been made manifest. I was moved, too, by the cheers that greeted me and by the burst of 'for he's a jolly good fellow' as I passed."
January 1, 1970
https://en.wikiquote.org/wiki/The_Autobiography_of_Bertrand_Russell