Current events have me thinking over my own experiences with sexual harassment and things which were not, in fact, sexual harassment.
I don't think it was just Being The 70s and me being young and naive that meant I didn't see work colleague The 70s Swinger as a harasser. The 70s Swinger might have indicated that he would love to make sweet horizontal music with one, but didn't pressure, took a refusal, and indicated that should one ever change one's mind, he'd be delighted to oblige. (There is a character like this in Kingsley Amis's otherwise fairly toxic novel, Take A Girl Like You - which totally against all sense and reason made it onto some list of Great Romantic Litfic, pass a sickbag - who indicates to the heroine that if she were ever interested in developing their relationship, that would be absolutely splendid, but doesn't harry her: and also points out to the protag that raping the heroine when she is incapably drunk is not a good thing to have done - we are not entirely sure whether the author takes the same view.)
I am not sure whether this was innate personal virtue or a result of having been involved in The Swinging Community, which one is given to understand was all about respecting people's boundaries and not being creepy (at least in its rhetorical claims).
Whereas in my next job, I was at a party in the associated Academic Centre, at which I was conversing with one of the academics, who kept trying to put his arm around me. Okay, I did not find him attractive, but even if I had, I would not have considered this appropriate behaviour in the light of venue, and degree of previous acquaintance, and would have reassessed any marks I'd previously awarded for attraction. Anyway, I kept detaching the arm and eventually walked away, and blow me, Harassing Academic went and complained to Former Line Manager (still ongoing Line Manager at that time) that I was being 'unfriendly'. And believe it or not, she conveyed this message and suggested I should resume conversing with him. WTF.
However, unlike the unfortunate students and postgrads in the centre, I was not obliged to be nice and suck it up.
There was also, probably around the same time, a late-middle-aged bloke who was mainly i/c audiovisual stuff and general housekeepery things. Who was wont to grab one in an ostensibly non-sexual way that was still inappropriate - I still remember the time he was running the video for an onsite conference, at which I was slightly late to a session already in progress, and he gripped my arm extremely hard and more or less dragged me to an empty seat (yeah, I know: most people would just point it out). There was a general unease that meant that I steered well of him clear at any work events at which the drink had been flowing.
It's not clear to me whether in either of the above instances there was any more intended than just this relatively innocuous yet deeply annoying violation of personal boundaries in public spaces: yet I would define these as harassment and 70s Swinger's expressed desire for Going The Whole Way on some mutually agreed occasion as not.
As I am sure has been remarked by more than one commentator, if a bloke is unclear as to the distinction between flirtation or harassment, he's probably Doin It Rong.