A ghetto is a section of a city occupied by a group who live there especially because of social, economic, or legal pressure. The word was originally used to refer to the Venetian Ghetto in Venice, Italy, where Jews were required to live. The corresponding German term was Judengasse. In Moroccan Arabic, ghettos were called mellah. The term came into widespread use during World War II to refer to ghettos with severely constrained conditions, where Nazis required Jews to live prior to transporting them to concentration camps. The term "ghetto" is now commonly used to refer to any poverty-stricken urban area. In the U.S, "Rural ghetto" is used to describe mobile home parks, farm labor housing tracts, and Indian reservations. Urban neighborhoods where Hispanic immigrants settled in the late 20th century (called barrios) are said to be comparable to ghettos, because most immigrants are clustered in culturally isolated enclaves.