Where one or more people throw blood on a car and often many at one time and most often by getting a bucket of blood and dumping it over the side of an overpass so that it will fall on the cars passing below. This is often done by people in the wealth reform movement
and/or american communist movement
etc. to protest and respresent the blood of the 16,000 people who starve to death somewhere in the world everyday which the people in the developed world are responsible for because it gobbles up a the wealth.
Lets do some car blooding.