Edited sentence: As the character of the neighborhood changed, middle-class Muslims also began leaving the neighborhood.By the 1970s, Cihangir was known as a neighborhood where Anatolian migrants lived alongside artists and intellectuals.It also became known for illegal prostitution.Starting in the 1930s, non-Muslim residents of Cihangir and the rest of Beyoğlu left or were forced out.They were replaced by Muslims from other Istanbul neighborhoods and by internal migrants from eastern Turkey