Oh, I don't think I mentioned the tenacious foot fetishist here yet. We had a guy who was walking around the library for a period of roughly two years, filming women with bare feet, and uploading the "foot"-age to YouTube. I initially thought something was going on, because there were sets of books moved out of the way where the only reason they were moved and stacked up were so somebody could clandestinely view people, but at the time I thought that it was just a peeper, not a filmer. This behavior was reported to the police and they came and looked but did nothing because it was too abstract a concept apparently and there was no proof of villainy, just my hunch.
Roughly a year after the book moving was reported, I noticed a young guy in a porkpie hat obviously filming a spectacularly barelegged lady without her knowledge (in a stairwell bench, this guy was behind her filming like the photographer at the end of Austin Powers). I reported it to the cops but other than going up there they did nothing because he had stopped filming. When next I caught him I confronted the guy, but he didn't particular seem to care and other than stopping filming when he saw me, it did nothing to dissuade him. I reported it again to the campus police a few time, but gave up.
Finally a guard who had witnessed one of my earlier reports saw the guy doing the same thing, and remembered my story. He didn't have the authority to arrest the guy, nor could he convince campus police that it was happening either. In the meantime the foot maniac was getting bolder, and he spent all day wandering around the library, looking for comely twinkletoes for his camera, even doing things like sitting in the floor beside people filming their feet but pretending to just watch his phone. This final few months of outrageous boldness finally gave enough opportunities for the guard to finally convince the campus police to take it seriously. The perp was caught and confronted, and then he confessed and the hundreds of videos he had uploaded were discovered as well as the cache of images on his phone. I remember the police said he was particular fond of "hot Indian feet" as that was one of his most frequent headings for his cinema verite. YouTube agreed to remove the footage, the student was expelled, and the general public was never informed it happened.