It seems the creator of the Purge thought he had an original idea until his dad told him about the Star Trek episode about Landru. His dad made him watch the original Landru episode many time.. the link has the whole story...
https://birthmoviesdeath.com/2013/0...-which-star-trek-episode-influenced-his-movie
This weekend Universal’s The Purge opens in theaters, and the film’s central premise - the idea that once a year people are allowed to commit any crimes they want for 12 hours - may be familiar to fans of Star Trek. After all, it’s quite similar to the original series episode Return of the Archons. And that’s not a coincidence.
https://birthmoviesdeath.com/2013/0...-which-star-trek-episode-influenced-his-movie
This weekend Universal’s The Purge opens in theaters, and the film’s central premise - the idea that once a year people are allowed to commit any crimes they want for 12 hours - may be familiar to fans of Star Trek. After all, it’s quite similar to the original series episode Return of the Archons. And that’s not a coincidence.