The psychological influence of the police uniform

http://www.policeone.com/police-products/apparel/undergear/articles/99417-The-psychological-influence-of-the-police-uniform/

In this article, we see the way that uniforms are perceived by the public, as well as how the police view themselves when wearing their uniform. We see the historical reference the modern day uniform is influnced by those of London police officers.
The color of the uniform also affects our perception of the officer, for example, the usual color is blue, yet for the California sheriff, it is tan and dark green, which gives a more approachable feeling to the officer. The police uniform give people around the officer a sense of security, knowing that it is a police officers job to serve and protect. This uniform also gives the officer the entitlement and right to step if he sees danger.