Originally, nudity and naturalists were one and the same, and in the states it seems that nude has come to mean exhibitionist while naturalist has come to mean an uninhibited attitude towards nudity as being the natural state of humanity. There are nude campgrounds that cater more to the naturalists ideology than the nude beaches do. Most beaches fall into the public domain with the exception of a nude beach on a private lake or in a nude campground. Oddly, due to the public domain, Blacks Beach inforcement would fall to park rangers at Torrey Pines, who should have the authority to arrest someone who acts as a sexual perpertrator, regarding someone coming up and simulating oral sex or men showing erections and pursuing women. It sounds like a case of the few "bad apples" making the majority uncomfortable.
I admit, after seeing Wristthickxl's gallery, it would be hard not to stare, or get aroused(and embarrassed), but I know where to draw the line and respect another, something that seems to be going out of fashion. I could rant about respect for others in many areas, cell phones, common courtesy, etc. but I won't, except to say that as society becomes less polite and respectful, such behavior is see less and less as out of the norm.