Now, Mr. Botero, 73, who lives in Paris and New York, has taken on an even more explosive topic: the torture of Iraqi prisoners at Abu Ghraib. Forty-eight paintings and sketches – of naked prisoners attacked by dogs, dangling from ropes, beaten by guards, in a mangled heap of bodies – will be exhibited in Rome at the Palazzo Venezia museum on June 16. “These works are a result of the indignation that the violations in Iraq produced in me and the rest of the world,” Mr. Botero said by telephone from his Paris studio.