POMAN 1971 is widely credited with inventing the containment tactic later known as "kettling" (from the German Kessel – "cauldron"). The manual described “Encircling containment” as a non-violent way to control a volatile crowd: simply surround them and wait for their energy to dissipate.
To understand POMAN 1971, one must first erase the modern image of drones, rubber bullets, and social media. In 1971, the world was a powder keg of physical, face-to-face conflict. public order manual poman 1971