Young women need to grow up feeling society is on their side and that their safety and well being is a priority. If we're not constantly reaffirming that message where else are they going to get it from?
Sadly, it is NOT the case that society is on women's side. So girls can't be raised thinking that their safety and well-being is a social priority: it isn't.
The best thing we can do is help them grow up to think that it's ok if they make their safety and well-being their own priority, and that they have, in themselves, the strength to get into many, many scraps throughout their lives in defense of their safety, and their well-being.
Teaching them to trust their gut. To state their boundaries. To say "no" and not feel bad about saying no. To hold their own when people demand things of them that they're not comfortable with.
Because they're going to get people trying to step over their boundaries ALL their life long, whether it's teenage boys expecting anal sex as their due, or any of the rest of the wealth of experiences society throws at girls and women.