When one thinks of vacations, images of beaches and Disney World come to mind. But there are those who seek a darker path. Dark tourism, as it is called, is a growing industry. It caters to those interested in sites where great calamities, historical atrocities and horrific crimes have taken place, such as Auschwitz and Pompeii and even the Manson and Jack the Ripper murders. Jeffrey Podoshen, a professor of marketing at Franklin and Marshall College, has done extensive research on dark tourism. On this episode of The Human Condition with Lisa Gregory, part two of a three-part series discussing Podoshen's research, he talks about why so many are intrigued by these darker places. He also talks about where we draw the line between selfies at Auschwitz and commemorating and respecting these places and embracing the lessons for humanity that many of them hold.