The First Purge is about the first purge, but it’s not actually the first Purge movie. It’s the fourth Purge movie, but set during the first purge in the Purge universe. Still following? No matter, Be Good and Rewatch It is here to help. Writer/director James DeMonaco, who helmed the past three movies, only worked on the script for The First Purge, with Gerard McMurray (Burning Sands) stepping…