Black teenager Emmett Till is lynched in Mississippi for whistling at a white woman, galvanizing the nascent civil rights movement.

African Americans, also known as Black Americans and formerly called Afro-Americans, are an American racial and ethnic group who as defined by the United States census, consists of Americans who have ancestry from "any of the Black populations of Africa". African Americans constitute the second largest racial and ethnic group in the U.S. after White Americans. The term "African American" generally denotes descendants of Africans enslaved in the United States. According to annual estimates from the U.S. Census Bureau, as of July 1, 2024, the Black population was estimated at 42,951,595, representing approximately 12.63% of the total U.S. population.

Emmett Louis Till was an African American youth, who was 14 years old when he was abducted and lynched in Mississippi in 1955 after being accused of offending a white woman, Carolyn Bryant, in her family's grocery store. The brutality of his murder and the acquittal of his killers drew attention to the long history of violent persecution of African Americans in the United States. Till posthumously became an icon of the civil rights movement.

Mississippi is a state in the Southeastern and Deep South regions of the United States. It borders Tennessee to the north, Alabama to the east, the Gulf of Mexico to the south, Louisiana to the southwest, and Arkansas to the northwest. Mississippi's western boundary is largely defined by the Mississippi River, or its historical course. Mississippi is the 32nd largest by area and 35th-most populous of the 50 U.S. states and has the lowest per-capita income. Jackson is both the state's capital and largest city. Greater Jackson is the state's most populous metropolitan area, with a population of 591,978 in 2020. Other major cities include Gulfport, Southaven, Hattiesburg, Biloxi, Olive Branch, Tupelo, Meridian, and Greenville.