Artisans Rainer Schuette (L) and Michael Friedrichs-Friedlaender prepare the brass plaques of Stolpersteine, which are concrete cobblestones afixed with a brass commemorative plaque, at the Stolpersteine manufacturing studio on August 10, 2012 in Berlin, Germany. The Stolpersteine project, launched by German artist Gunter Demnig in 1995, commemorates victims of the Holocaust. Demnig installs the stones into the sidewalk at the front entrance of the residence where the victim last lived before being deported by the Nazis. Demnig has installed over 30,000 stones all across Europe at the request of families of victims or local authorities. Stolpersteine literally translates to &quot;stumbling stones.&quot;  (Photo by Sean Gallup/Getty Images) Photo: Sean Gallup, Getty Images