Power + Impotence (Painting #20 of 37) George Mullen, Power + Impotence, 2016, barbwire and oil on canvas, 30 x 48 inches. Copyright © 2016 George Mullen. All rights reserved. Power + Impotence (Painting #20 of 37) George Mullen, Power + Impotence, 2016, barbwire and oil on canvas, 30 x 48 inches. Copyright © 2016 George Mullen. All rights reserved.