Not in public.
You can travel on a public road to a public clinic and have a state licensed doctor abort a baby for profit to a publicly owned business because that is private, but you cannot prevent someone from hiding a camera and taking pictures of your body from beneath you because your ‘privates’ are public.
Only in American law is that considered sensible!
Without even getting into the substance of this particular case, let me just rant that the whole "no expectation of privacy in public" thing is a horrible precedent that the government, no doubt loves.
I do have an expectation of some degree of privacy in public. let's say I am walking down the street and am stricken with the sudden urge to pick my nose or scratch my butt. The risk of being seen by one or two random strangers is NOT the same as the risk of being captured in the act on the internet for all eternity.
Big brother does not want we peons the expect privacy ANYWHERE. It's BS.