Robert Capa, the late co-founder of Magnum Photos, has been called “the greatest war photographer in the world” and “the founder of modern photojournalism.” Before he was either of those things, he was a 17-year-old political refugee; he was forced out of his country, Hungary, during the reign of Regent Miklós Horthy, and once he had landed safely in Germany, he took a job in a darkroom and worked his way up.