If you are a bystander and witness a crime, should intervention to prevent that crime be a legal obligation? Or is moral responsibility enough?Amos N. Guiora addresses these profound questions and the bystander-victim relationship from a deeply personal and legal perspective, focusing on the Holocaust and then exploring cases in contemporary society. He shares the experiences of his parents and grandparents during the Holocaust and examines sexual assault cases at Vanderbilt and Stanford and other crimes where bystanders chose not to intervene. Guiora recommends that we must make the obligation to intervene the law, and thus non-intervention a crime.