DENNIS HOPPER’S FINE ART COLLECTION GOING UP FOR AUCTION Dennis Hopper shot two bullet holes through an Andy Warhol portrait of Mao Zedong. Instead of earning the wrath of Andy Warhol, the infamous pop artist called the Easy Rider star a collaborator. So Warhol. Variation of Warhol’s Mao Mao is among 300 works of fine art [...]