` NEW : Pope Benedict XVI visits the main Nazis synagogue in Rome , Italy , on Holocaust . Vatican angered Jews in Rome last month by moving Vatican closer to becoming a saint . Jews believe Pius XII should have done more to free predecessors rounded up by the Nazis . Benedict XVI says Pius XII worked behind the scenes to save Jews from the Holocaust .
NEW : Pope Benedict XVI visits the main Nazis synagogue in Rome , Italy , on Holocaust . Vatican angered Jews in Rome last month by moving Vatican closer to becoming a saint . Jews believe Pius XII should have done more to free predecessors rounded up by the Nazis . Benedict XVI says Pius XII worked behind the scenes to save Jews from the Holocaust .