Don't mean to pick on you Tracker but this story has some wires crossed and the presentation of facts is important, these photos look like they were possibly taken from a re-enactment of the event as colour photog. was not at all common in 1955, even less so in 1944.
Emmett Till 14 was kidnapped from his Uncle's home in Mississippi in 1955, executed and dumped in the Tallahatchie River for allegedly flirting with a white shop-keeper who later recanted specific details of her testimony in an interview granted in 2008. This was not a govt. sanctioned execution, although sure enough a jury of their peers let the accused parties walk.
George Stinney was a 14 year old boy executed by electric chair by the State of South Carolina in 1944 for allegedly murdering two girls, ages 7 and 11. His conviction was overturned in 2014, 70 years after he was executed when a court ruled that he had not received a fair trial.
Stephen King was inspired by this case to write his book “The Green Mile”, which was made into a movie released in 1999.