JFK Revisited: Through the Looking Glass is a 2021 American-British documentary film about the assassination of John F. Kennedy directed by Oliver Stone, based on the 1992 non-fiction book Destiny Betrayed: JFK, Cuba, and the Garrison Case by James DiEugenio and on newly declassified evidence about the case. It premiered on July 12, 2021, in the Cannes Premiere section at the 2021 Cannes Film Festival.

The 74th annual Cannes Film Festival took place from 6 to 17 July 2021, after having been originally scheduled from 11 to 22 May 2021. American director Spike Lee was invited to be the head of the jury for the festival for a second time, after the COVID-19 pandemic in France scuttled plans to have him head the jury of the 2020 Cannes Film Festival.