Anton Joseph Cermak was an American politician who served as the 44th mayor of Chicago, Illinois, from April 7, 1931, until his assassination in 1933. He was killed by an assassin, whose likely target was President Franklin D. Roosevelt, but Cermak was shot instead after a bystander hit the perpetrator with a purse.

Chicago is the most populous city in the U.S. state of Illinois and in the Midwestern United States. With a population of 2,746,388 in the 2020 census, it is the third-most populous city in the United States after New York City and Los Angeles. As the seat of Cook County, the second-most populous county in the U.S., Chicago is the center of the Chicago metropolitan area, often colloquially called "Chicagoland" and home to 9.6 million residents.