Topless women are not objectively harmful. Yes, it can be offensive and make people uncomfortable, but there are plenty of things are offensive or make people uncomfortable, that aren't illegal.
Also, female nipples have no public health issues that would apply to men's and women's genitals.
Our society considers massive cleavage acceptable, but women's nipples off limits, even though both can be sexually arousing.
America has very hypocritical attitudes with allowing far more exposure to violence than to sexuality/nudity.
People need more exposure to violence. They don't need more exposure to sex and nudity.
you HAVE to be trolling now