The problem with blood hoses is that they are inclined to human-error hemorrhaging. Protesters in London planned to use an old fire engine to spray the Treasury building with fake blood but it did not exactly work out . . . .
Extinction Rebellion arranged for 1,800 liters of red liquid was dumped at the front entrance to 1 Horse Guards Road, Whitehall. However, the effort to drench the 100-year-old building was frustrated by hose handling issues.