Was there really not a mass assault on women? Were they not, for example, treated as if somehow they were a lower species? It might not have been a direct assault, but it's surely clear in the language, the attitudes and the media of the day that women were not treated as equal (in the sense of equal rights, equal opportunities etc.) Advertising slogans such as "you mean a woman can open it?!" and the like. In the meantime, this assumption that if a woman doesn't like being approached, she can make use of a hefty slap, seems to overlook the fact that the man shouldn't really have been making an unsolicited advance in the first place. Why not have the manners to ask, rather than to just assume she'd like it? Seems to me to be a bizarre attitude.
From what I can tell, the story behind this photo is less clear-cut than LG seems to suggest, but that's only based off wikipedia.
(If we're doing the whole "I was once pinched on the bottom by..." thing, so far the only time that's happened to me was recently, and it was a man doing the pinching...)