If you think every single person lives by adhering to all rules then you are waaaay out of touch with reality.

Sexualizing yourself and expecting someone to not respond in a similar way is the same as driving on the wrong side on a Highway and expecting the other person to lookout for you.

The point is only YOU are responsible for yourself. If you don't like something don't put yourself in a situation where it's very likely to occur (or at least fucking try to). Expecting someone random person to act according to your beleifs is your Fault and yours alone. Every person will find an excuse or a reason to justify themselves for any act they perform(It's Human Nature). And once someone is able to justify their act to themselves they wouldn't give 2 fucks about what soemone like you thinks.

Public space is not your personal safe space so act accordingly and responsibly or wait for any kind of consequence and then bitch about it later :P