nowing they would get into skirmishes with protesters, Oakland police officers have developed a system that makes them completely incognito.

First, they don riot gear from head to toe, including helmets with visors covering their faces, making themselves indistinguishable from one other -  their only identifying features being name tags sewn to the outside of their uniforms.

But then they place black tape over their names, ensuring nobody would be able to identify them if they attack protesters.