Till was a 14-year-old black teenager in 1955 when he was kidnapped, beaten and lynched in Money, Miss., for allegedly whistling at a white woman.
The marker was erected near the Tallahatchie River where Till’s body was found days later.
The new memorial, made of steel, is 10 times heavier than the previous ones, the Huffington Post reported.
“This marker answers the question as to what we do with our history,” the Rev. Willie Williams, co-director of the Emmett Till Memorial Commission, which advocated for the new marker, said, according to the Post. “Do we learn from it? Do we use it to help our society have greater respect for humanity? This answers that.”
The Rev. Wheeler Parker, Till’s cousin, who is the last living witness to his kidnapping, plus another cousin and her daughter attended the ceremony, the Post reported.
Till’s murder is seen as one of the catalysts of the civil rights movement of the 1950s and '60s
Last year, the Justice Department reopened the investigation into his death, saying it received new information.
The two suspects in his murder, the husband of the woman Till was accused of whistling at and the man's half-brother, were both acquitted by an all-white jury at the time.
The new sign was commissioned just days after some University of Mississippi students were suspended from their fraternity after posing in front of the memorial with guns last summer.