BERLIN (AP) — Artist Gunter Demnig carefully placed a palm-sized Holocaust memorial brass plaque into the sidewalk on a busy street corner of Berlin. It said: “Johanna Berger, born in 1893, lived here; deported on Nov. 17, 1941, murdered on Nov. 25, 1941.” After Demnig had swiped the sand off Berger’s memorial stone and those for her husband and two sons, a dozen relatives drew closer around the four plaques, which are called Stolpersteine, or “stumbling blocks,” in German. They put down white