Not to get into too many details, but I've been no-mistakes-about-it harassed one time, plus what meets the current definition of assaulted twice. I have no idea who the harasser was (called me on the phone multiple times when my parents left, I was too young to know about how to trace calls and too scared to tell my parents), but I did and do care deeply for the second two people and don't want them to get in the kind of trouble they might get into if I came out with it. What they did was deeply wrong, but I care for them and don't want their names run through the mud or maybe even them being unemployable for life over things which happened years ago which they probably thought I wanted.
If I did "out" them, what would happen to me? I probably wouldn't be believed (I'm a dude so I doubt anyone would believe that two girls did it anyways) so all it would do is bring unwanted attention to myself and likely bring an army of people harassing me and accusing me of lying. I imagine a woman's experience would be worse.
I value my quality of life and the security of my friends more than I do the principle here. The math just doesn't add up to name people.