Russian Jews populated Humboldt Park, and Italians were in East Garfield Park. However, a dramatic change in the city's population occurred with the Great Migration of Blacks from the Southern United States into the urban North. In 1910, Chicago's Black population was at 40,000, most of these people being concentrated on the South Side in an area known as the Black Belt. By 1940, the Black population rose to 278,000, and more of these residents increasingly lived on the West Side. In the Near West Side, there were 26,000 Blacks by 1940, and this community was joined by a growing Mexican-American community and a smaller Puerto Rican community. The Black population on the West Side was growing due in large part to the crowded conditions of the South Side, however crowding increased quickly on the West Side as well. Black residents began moving in small numbers to East Garfield Park, being met with even more housing discrimination than they faced in the Near West Side. By this time, the Maxwell Street Market employed mostly newer Black residents and the market became an important center for Black Chicago blues musicians coming from the South. The construction of the Eisenhower Expressway in the 1950s demolished many homes in the area, forcing residents to relocate further west. The announcement of a University of Illinois campus in Chicago to be constructed in the Near West Side brought the community head-to-head with Mayor Richard J. Daley, and the construction of the university displaced half of the community, including the Hull House settlement. Nearly the entire Italian and Greek communities relocated to the Northwest Side and suburbs. The Black population moved further west into the Near West Side, Garfield Park and the eastern portion of Lawndale, and the Mexican population, losing much of their housing stock, moved in large numbers south to Pilsen. 1960s to 21st century White flight and blockbusting drastically changed the demographics of the West Side by the 1950s. Throughout this decade, many white Chicagoans moved to the suburbs in a planned move by investors who, through scare tactics and instigating racial antagonism, encouraged white Chicagoans to sell their city homes and buy homes the investors built in the suburbs. By 1960, Chicago recorded its first ever population drop. However, Black and Latino residents began filling the West Side to its maximum. Black areas of the West Side began to experience highly impoverished