Interesting thread. Still not sure how to put things into practice.
Let's take some real-life examples that have caused me some trouble:
1) E likes dancing in nightclubs. Each week she goes with her friends to the same nightclub, a place with a local reputation as a 'meat market' - i.e. full of people looking to meet others for romantic or sexual liaisons. She gets a steady stream of strangers trying to pick her up, which enrages her. Within an hour she is shaking, frustrated, and angry, literally shaking like a leaf, and at that point someone generally walks her home.
She asks for my advice as to what to do.
What do I say? The problem would go away if she wore extremely conservative clothing, but that's no fun to dance in, and not fair to her. The problem would go away if she didn't dance at that particular club, but there isn't another one (that had music she likes) and again, not fair on her. The problem would go away if people at the nightclub acted differently, but that's not really fair on them. The people approaching her aren't being particular obnoxious, or persistent, its just that there are a lot of them.
2) S is depressed that no one seems to want to go out with her. Taking a tip from both her upbringing and her romance novels she plays hard to get. Anyone who wants to date her will have to be persistent, trying to woo her despite her protests. Instead, everyone gives up after the first 'no'. She's at a loss as to how to chat to boys without either driving them off, or throwing herself at them, or having them assume she's not interested. She's not particularly socially apt.
The problem I'm hitting with these examples, is that the behaviours that people are complaining about such, as assuming someone is romantically/sexually available based on what they're wearing and where they are, or persisting in trying to pick someone up who has already told you they're not interested, are behaviours that some people are relying on for their romantic lives. Changing that behaviour is more than just raising awareness or haranguing people in public, it's also about providing alternatives to people who are behaving that way, or encouraging others to behave in that way, for what to them are clear and compelling reasons.