Frankly the responders in this thread must be the exception to the rule. I was going about town at the height of Britpop, Girl Power & the ladette. Women most definately went out to meet sexual partners. Be that a snog or a full blown knee trembler somewhere.
Watch any of the fly on the wall Police shows that have been filmed on a weekend night. They will show countless women snogging lads (and lasses). It will show any amount of women deliberately flashing their bodies for the camera. Just the same as the lads are doing.
If you think a lad coming up to you and trying to dance is unacceptable then sorry in my eyes you are wrong. It would only become wrong if he didn't move away when you asked. That is what the doormen are there for. Go tell them.
Likewise someone touching your arm, side, small of your back is not you being sexually assaulted. If you take the time to read the legal guidance one of you posted, there has to be sexual intent for it to be sexual assault.
The same as a man looking at an attractive legal age woman is not a crime. You many not think the guy is attractive but you cannot dictate who can and cannot look at you when out in public.
But to get back to what those in this thread seem to want, use the tools you are given at the time. Your stood at the bar and a man touches your bum, tell the bar staff who can get security.
Your boss touches you in an indecent manner, report him to either his senior or the Police and ask for witnesses.
Somebody fakes a pic of you, again report and ask for witnesses.
It is up to you to be proactive, don't rely on the men (and women) who are around you to solve your issue. In many cases they probably didn't even know an incident has occurred.
Want to alienate those you ae asking to support you, carry on blaming all men for the actions of some.