Adolf Hitler is considered the most sinister modern leader of all time. In fact his name has become synonymous with evil. But can Hitler be explained? There are many historians who think so, or at least attempt to, despite criticism by those who think it's an exercise in futility. Investigative journalist Ron Rosenbaum examines the motivations and conclusions of Hitler explainers in his recently updated book, "Explaining Hitler: The Search for the Origins of His Evil."
With production help from Midday Intern Connor Graham.