Well, the girl with the bikini pictures made a huge mistake, and I believe she regrets it, but dang....how could she not know what would happen? The teenage mind doesn't understand consequences. There are kids in my town who do such dumb things, and they have plenty of time to think about it afterward, but seldom take even a minute to think about it ahead of time. Kids are like that. It's a sad truth that there are very, very few minors who can handle lack of supervision 24/7.
The time to feel guilty and ashamed is BEFORE you do something, not just after (and if you think first there probably won't be an after).
As far as pictures in public, well, I try to respect minors even if they are in a public situation like a parade. I suppose it's because I'm a teacher of young kids and a father of two young girls. I don't post pictures of minors online in any capacity unless it's family or close friends. Even then, I'd never post bathing suit pictures if it's in any way provocative or sexy. I also take photos of the kids at school for the yearbook, and send tons of pics to the parents. They've never had a problem with it because I don't post the photos online at all...never. I take great pride in the trust that has developed between myself and the kids/parents. In this day and age, with so much weird stuff in the news (and much of it about teachers/students), I cannot begin to describe the appreciation I have for the kids and parents at my school. They fully trust me, and it just shows that most people really do have faith in each other to do the right thing. I would rather die than to violate that trust. I wish everyone respected youth that way. They have a right to be kids and not have that stolen by some creep.
I digress: The mom in question (Original post) really shouldn't put her daughter in a public parade if she doesn't want photos taken. It's a parade. By its very nature it's a group of people who want to be on public display. Complaining about photographers would be like the Macy's Parade organizers getting upset that you take photos of the giant Garfield balloon because Garfield is a copyrighted cartoon figure.
That said, during our annual 4th of July parade I don't take pictures of the girls in the sashes and crowns. We have a Miss Something (I'm not sure what it's called) with girls from 5-17 on a float representing different age groups. The older teenagers are pretty, but I still won't take their pictures, and the little girls with makeup just put me in a bad mood. I don't see the point. Heck, I don't even like my own girls touching makeup, and they are 11 and 12. I let my wife handle that, but I'm quick to say something if I don't like it.
I'm a bit old school when it comes to girls and women. I think they are the better half and should be respected. Don't hit them, don't violate them, don't belittle them, don't patronize them. Be polite, protective, respectful, treat them as equals, but always keep in mind that the greater physical strength of men is not for power. It's for protection.
You know a man is strong by how he protects others, not by how he overpowers others (and that includes other men).
Dang, I had too much coffee.
Thank you. 
