Well, I don't think the separation of boys vs girls , as you mean it, colours and games and so on, actually contributes to the long lasting damage that causes things like rape and murder.
I think that life factors are far more likely. Yes, you get your odd notorious murderer who wanted to kill blondes, or preyed on women, but ecen they have their (sick) motivations from somewhere. And many of these, as much as we don't like to admit it, are related to their relationships with people in their life.
I personally feel that the damsel in distress/must be saved narrative from us being young girls doesn't do us any favours either.
As someone up thread said far more succintly than me, violent men have far more in common with violent women, equally with victims of both sex.
So why, when male domestic abuse or male rape (and yes, I'm using that word) is used on here, why is it diminished? Why is it one long sliding scale? Do you not think we could learn from all victims of domestic abuse or violent assault, and they us? Does the fact they are less likely to be seriously injured or dead mean their experiences arent valid?
Daily, even now, we see comedy performances of women verbally or physically abusing men. That is viewed very differently than men on women - if anything, I think that thats the one thats played off as "comedy", rather than boys will be boys.