The Jewish and Italian demographic decreased, while the black and Puerto Rican population increased in this time. The early-20th century Great Migration of black people to northern industrial cities was fueled by their desire to leave behind the Jim Crow South, seek better jobs and education for their children, and escape a culture of lynching violence; during World War I, expanding industries recruited black laborers to fill new jobs, thinly staffed after the draft began to take young men. In 1910, Central Harlem population was about 10% black people. By 1930, it had reached 70%. Starting around the time of the end of World War I, Harlem became associated with the New Negro movement, and then the artistic outpouring known as the Harlem Renaissance, which extended to poetry, novels, theater, and the visual arts. So many black people came that it "threaten the very existence of some of the leading industries of Georgia, Florida, Tennessee and Alabama." Many settled in Harlem. By 1920, central Harlem was 32.43% black. The 1930 census revealed that 70.18% of central Harlem's residents were black and lived as far south as Central Park, at 110th Street.