The 1970s is arguably the most fruitful and consistently excellent decade for horror cinema. Of course, that argument could be to extended that time period for cinema as a whole, and perhaps that's why the 70s provided the breeding ground for so many of the genre's greatest auteurs, enduring franchises, and singular creeptastic creations that altered and defined the course of horror movies to a track they remain on to this day. But if it was a time of cinematic revolution, it was also a time of cultural upheaval. It was a time in which the mentality in …