On February 27, 1943, the so-called “Fabrik-Aktion” of the Nazis took place, during which thousands of Jews were arrested at their workplaces of forced labor and then deported to Auschwitz. In Berlin thousands of men were held in the internment camp at Rosenstrasse 2-4, the former welfare office of the Jewish Community in Berlin. When their non-Jewish relatives found out where they were, they gathered in front of the building; it was mainly women and children who stayed there for days – until the detainees were released.
Online link with contributions to the commemoration in Rosenstrasse at:
http://www.orte-der-erinnerung.de/aktuelles/online-gedenken-rosenstrasse/