1. Diego Velasquez, Rokeby Venus (vandalized 1914)
Diego Velázquez’s 1651 masterpiece, The Toilet of Venus (aka the Rokeby Venus), ran afoul of a good cause when women’s suffragist Mary Richardson walked into London’s National Gallery and took a meat cleaver to the Goddess of Love’s behind in protest of the arrest of a fellow suffragette. Richardson, a Canadian activist for women’s voting rights, was a flaming radical in a literal sense: She’d committed numerous acts of arson before she attacked the Spanish Old Master’s handiwork. She would later become a member of the British Union of Fascists during the 1930s. The painting itself was fully restored and returned on view.