In April 1941, when the Jews celebrated Passover, a holiday commemorating the exodus from Egypt, the bricklayers in Kraków begin to build a wall around the Jewish ghetto. They shaped the wall like tombstones and chose the symbol in advance to predict the death of so many Jewish people in Kraków. Roman Polanski, aged eight, who lived in Kraków at the time said, “I suddenly realized that we were to be walled in. I got so scared that I eventually burst into tears.”