In מיכה the posuk says, “והצנע לכת עם אלקיך”
While much of the subject of tznius that we discuss is relevant to the interactions of people, the true tznius is actually a subject that is בין אדם למקום, not only בין אדם לחבירו. I think a sticking point that makes these discussions difficult is that the matters of tznius are no longer the individual following their responsibility to HKB”H, and living a lifestyle of being צנוע, but the rules and halachos have been relegated to requirements that are imposed, not just followed.
It is not even about men making the rules for women (a gender issue that smells of feminism), nor is it about how men are affected more than women from visual stimuli (which is true). People are increasingly resistant to having restrictions placed on them by any outsiders, gender being irrelevant. The Lakewood school that got shmeared in the media, here on YWN, did not indicate that there were men involved at all.
If all this stuff is to get resolved, the community needs to return to norms that have long been obsolete, where people did their best to be Yir’ai Shomayim, and follow halachos to the best of their ability, without the rule setting and impositions being made by various facets of the community.