While I completely agree with you about the proposed scenario being vague as all hell, in general people do not have a right to "privacy" in a public setting (i.e. a place intended to be open to the public). If I snap a picture of you I'm completely within my rights and you'd have no way to force me to delete it (if I tried to make money off your likeness you may or may not have some recourse to acquire some portion of that income).
I assume someone "getting mad", with no other context provided, is somehow physically or verbally displaying their anger. Anyone can do this (within reason) though in many scenarios it lacks taste and decorum. Likewise anyone can look at you, take a picture, etc. and at times it lacks decorum and taste but there's nothing inherently wrong with it.
As a side note, you may not have the right to privacy in a public setting but your 4th Amendment rights still apply as does your right to your personal space (i.e. no one can pull open your shirt and peer down it).
I'm not defending the bad shit that society foists on men or women, when it's wrong it is wrong. But I see no reason to assume, given the OP's vague story, that one party acted particularly badly or well. That some people give the benefit of the doubt to the man and not the woman, and in your case, vice versa, seems very odd to me.