First, she points at a yellow badge with the name “Gavin” on it. “So, this badge right here is age 16 to 18 years old, OK? That means a minor,” she says, tapping her finger on the badge.

The Yellow Badge, which Hitler’s Nazis seek to foist as a mark of shame upon the Jews of Germany, has come to symbolize the new spirit actuating the German Jewish youths who have come to settle ...