Also, “weapons of class 4 and lower” are cleared for usage on Purge Night. Only Class 5 weapons are outlawed, and seeing as those include explosives, and presumably any other weapon of mass destruction, the carnage can be kept nice and personal. Though, back in The First Purge, explosives and incendiary devices weren’t as taboo as they would eventually become. By the way, if you break any of the rules of Purge Night, the penalty is death by hanging.