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By Madeline Halpert
BBC News, New York
President Joe Biden will establish a national monument to honour Emmett Till, a black teenager who was lynched in 1955 in Mississippi, as well as his mother, a White House official said.
Till's lynching and the activism of his mother Mamie Till-Mobley helped galvanise the civil rights movement.
Mr Biden is expected to sign a proclamation on Tuesday which is Till's birthday, 25 July.
It comes a year after he signed the Emmett Till Anti-Lynching Act into law.
The Emmett Till and Mamie Till-Mobley National Monument will be set up at three sites in Illinois and Mississippi - the Roberts Temple Church of God in Christ in Chicago, where Emmett's funeral took place; the Tallahatchie County Courthouse in Sumner, Mississippi, where those accused of killing him were acquitted by an all-white jury; and a Tallahatchie River bank in Mississippi, where his body was discovered.
The 14-year-old from Chicago, was visiting family in Mississippi when he was brutally beaten and killed after a white woman claimed he harassed her at a store.
Carolyn Bryant Donham accused Till of harassing her while she was working alone as a clerk in the family grocery store on the evening of 24 August 1955 in Money, Mississippi.
Three days later, her husband and his half-brother kidnapped the boy at gunpoint, tortured him and threw his battered body into a river.
The two white men, Roy Bryant and JW Milam, were tried on murder charges a month later, but an all-white Mississippi jury acquitted them.
Till's mother insisted on an open coffin at the funeral so the public could bear witness to what he endured, and photos of the boy's brutalised remains shocked the nation.
Last year, a grand jury in Mississippi declined to prosecute Donham for her role in Till's death, and she died in April 2023 at the age of 88.
Tuesday would have marked Emmett Till's 82nd birthday.
In the US, presidents can establish historic landmarks, structures, and other objects of historic interest as national monuments to protect the sites, similar to a national park.
The national monument comes a year after Mr Biden signed the Emmett Till Anti-Lynching Act into law, which makes lynching a federal hate crime offence.
In 2022, the US Congress also passed legislation to posthumously award Till and his mother the Congressional Gold Medal, which Congress says is the "highest expression of national appreciation for distinguished achievements and contributions".