75 years ago, the Auschwitz-Birkenau camps were liberated. During the Second World War, the Nazis murdered 6 million children, women and men solely because they were born Jewish. Seven surviving witnesses (Elie Buzyn, Francine Christophe, Frania Haverland, Yvette Lévy, Victor Pérahia, Daniel Urbejtel and Julia Wallach) deliver a message of remembrance and vigilance.