If you guys want to read an interesting case about how obscenity laws work, google the amateur action bbs. They were raided and shut down in the early 90s (back in my hay day) because a postal worker found the material offensive; and although the BBS was based in another state- the laws in the postal worker's state deemed the material to be obscene.
This is why a lot of 70s porn had narrative and plot; because technically all porn could be considered obscenity and therefore illegal unless it had some kind of artistic quality. (a story) There was a crack down when Reagan came into office, no thanks to Traci Lords who did a number of scenes underage; this caused hundreds of people to be arrested/investigated- but then in the late 80s/early 90s they started pushing the limits again and only the most disgusting stuff was ever prosecuted- typically the violent stuff.
This is why a lot of 70s porn had narrative and plot; because technically all porn could be considered obscenity and therefore illegal unless it had some kind of artistic quality. (a story) There was a crack down when Reagan came into office, no thanks to Traci Lords who did a number of scenes underage; this caused hundreds of people to be arrested/investigated- but then in the late 80s/early 90s they started pushing the limits again and only the most disgusting stuff was ever prosecuted- typically the violent stuff.