The murder of 20 Jewish children at the former school building on Bullenhuser Damm on 20 April 1945 is one of the many despicable crimes commited during the Nazi reign of terror. Twenty children aged between five and twelve, ten girls and ten boys from all over Europe, were dragged from their homes with their families and deported to the Auschwitz concentration camp., where they were wrested from their parents to be subjected to medical experiments at the Neuengamme concentration camp for five long months. Finally shortly before the end of World War II, the children, their four carers and at least 24 Soviet concentration camp prisoners were murdered in the basement of a school in Hamburg by SS men trying to erase the traces of their crimes. For decades, their story was all but forgotten until the end of the 1970s, when a journalist began to search for traces of these children and look for relatives who survived the Holocaust. Together with the children's relatives and a few dedicated locals from Hamburg, Günther Schwarberg founded the Children of Bullenhuser Damm association, which set up a small memorial at the school. A new permanent exhibition opened at Bullenhuser Damm in 2011.