Okay, so it’s not all their fault, but they do share the blame.
A group of about two-dozen women marched topless through city streets in Portland, Maine, to oppose what they viewed as a double standard for male and female nudity. This, of course, attracted some attention, specifically from men. Men with cameras.

Somebody had to know this was going to happen, right?
Ty McDowell, who organized the march, said she was “enraged” by the turnout of men attracted to the demonstration. The purpose, she said, was for society to have the same reaction to a woman walking around topless as it does to men without shirts on. [Link]
