What year was Pollock 's last painting shown in the US ?
The critic Robert Coates once derided a number of Pollock ’s works as “ mere unorganized explosions of random energy , and therefore meaningless . ” In a famous 1952 article in " ARTnews " , Harold Rosenberg coined the term " action painting , " and wrote that " what was to go on the canvas was not a picture but an event .