What is the difference between Art and Graffiti?

Graffiti or Tagging is violent, disturbing, offensive, and possibly gang-related. It seeks to deter from the wonderful things in life and more "mark territory" than be helpful. The images are usually large very colorful letters that have no purpose. They take away from the elegant or the building and/or building. Art makes you stop and think and look at it. Examples include a picture of a historical figure or a map of the city.