Wikipedia: Richard Hambleton's early public art is noteworthy for his Image Mass Murder concept. From 1976 to 1979 Hambleton painted a police "chalk" outline around bodies of volunteer "homicide victims." He then splashed some red paint on the outline, leaving behind a realistic looking crime scene. These "crime scenes" were done on the streets of several major cities across the United States and Canada. Like Hambleton's future "Shadowman" paintings, the Image Mass Murder "crime scenes" would often have the effect of startling or shocking passersby. -- Source of annotation: Marvin or Ruth Sackner.