The strikers tried to interfere with bus-drivers, and I remember one bus that had a notice written up: "The driver of this bus is a Guy's Hospital student. The conductor is a Guy's student. Anyone who throws a brick will soon be a Guy's patient." For bricks were freely thrown by the strikers at anyone and anything. One notice ran, "Keep your bricks. All windows broken." And one bus so afflicted announced itself as "The Aerated Bus Company."
I find this very interesting. Obviously in the aftermath of the great war, Spanish flu epidemic, and great depression there was a lot of labor unrest. In the aftermath of the war the entire economy had to turn on a dime, from all war materiel, resources, and jobs to a largely private sector and the need to rebuild infrastructure in order to even have a functioning economy.