Łódź is recognized worldwide for the National Film School, where Andrzej Wajda and Roman Polański took their first steps in the film industry. It was once a small town, which grew rapidly due to the development in the cloth industry. During World War II Łódź was renamed Litzmannstadt and the big Jewish population was forced into the Łódź Ghetto. Łódź experienced prosperity in the socialist era and decline after the fall of communism. It is a city of contrasts, which has witnessed social inequality.