Germany somberly marked the 70th anniversary of the infamous Wannsee Conference on Friday, with the country's president saying the meeting that laid out plans for the Holocaust still caused "anger and shame."

At the same villa on the shore of Berlin's Wannsee lake where the original meeting took place, now a museum, President Christian Wulff told an audience that even though many years have passed, Germany should never be allowed to forget its responsibility for the genocide of some 6 million European Jews. "Therefore it is important and a national task to keep the memory alive," he said....