If this was 1957, you'd be absolutely correct. But it's not. Times have changes, and social mores do not look kindly of anonymous pictures of tween-aged girls with their shirts off.
http://www.krages.com/phoright.htm
Permissible Subjects
Despite misconceptions to the contrary,
the following subjects can
almost always be photographed lawfully
from public places:
accident and fire scenes
children
celebrities
bridges and other infrastructure
residential and commercial buildings
industrial facilities and public utilities
transportation facilities (e.g., airports)
Superfund sites
criminal activities
law enforcement officers
The General Rule
The general rule in the United States
is that anyone may take photographs
of whatever they want when they are
in a public place or places where they
have permission to take photographs.
Absent a specific legal prohibition
such as a statute or ordinance, you are
legally entitled to take photographs.
Examples of places that are traditionally
considered public are streets,
sidewalks, and public parks.
Property owners may legally prohibit
photography on their premises
but have no right to prohibit others
from photographing their property
from other locations. Whether you
need permission from property ownersowners
to take photographs while on their
premises depends on the circumstances.
In most places, you may reasonably
assume that taking photographs
is allowed and that you do not
need explicit permission. However,
this is a judgment call and you should
request permission when the circumstances
suggest that the owner is likely
to object. In any case, when a property
owner tells you not to take photographs
while on the premises, you are
legally obligated to honor the request.
That's what law says. Everything else is bull**** and people's preferences, not rights.
I have the same right to take picture of unknown to me kids playing at fountain as some paparazzi taking picture of Paris Hilton swimming nude ON PUBLIC property or, more importantly, on PRIVATE property but picture taken FROM PUBLIC property. That's what law says.
What somebody's grandma thinks about it - less of my concern.