If movies like Saw and Paranormal Activity — and their respective sequels and prequels — have taught us anything, it's that the notion of yearly installments is a viable one (at least with respect to horror films). You'd think that the practice would only accelerate franchise fatigue, but moviegoers seem to genuinely embrace the annual ritual. The filmmakers behind The Purge franchise have certainly taken this to heart, and they've even gone one step further, by incorporating the ritualistic aspect into the story itself. Welcome to the world of the Purge. Prepare for anarchy.