Christopher Hitchens
Hitchens tried to write from first-hand experience.  To write his essays, he braved gunfire in Sarajevo, he was jailed in Czechoslovakia, and in 2008, he was brutally beaten in Beirut, Lebanon. In 2009, Hitchens agreed to be waterboarded. He wrote in Vanity Fair magazine, "If waterboarding does not constitute torture then there is no such thing as torture".