It was used as a way to tell stories and record history in a time before a sophisticated language had developed. Throughout the ages, graffiti has been used in much the same way when a sophisticated channel of communication is absent or is perceived inadequate.
Some researchers have strange and interesting explanations for the word's evolution.
It was supplement to the extensive methods of protest concerning the various social and political movements of the time. Now it is a popular form of expression from coast to coast. Bombing the busses. At present, there is a war raging between the clean-up crews and the graffiti crews. It has escalated to the point at which public transportation systems spend millions of dollars a year on abatement and graffiti Organized transgression together with the taboo make social life what it is.