Was Lichtenstein a great artist, a thief, or both? Along with Warhol, he created the Pop Art movement of the 1960’s. His comic-based paintings reside in the greatest art galleries and can fetch more than $150 million. But some view this renowned artist as a plagiarist. WHAAM! BLAM! focuses upon the last living comic artists whose work was “appropriated” by Lichtenstein, and they are not happy.