It's mandatory where I work. The latest incarnation is a little online course. Very slickly packaged, set up so students can exit at any time, then return later to where they left off.
Funny thing is, I was noticing even before I had time to do the class that borderline-harassing behavior, the innocently-meant things that someone could take the wrong way if they were minded to, was way up in the last two-three weeks. ...People are suggestible; start talking to them about not hugging, not making jokes about personal appearance and so on and next thing you know, they've put those beans in their ears. (Dadrat it, I can't find the polka version! You'll have to make do with the semi-commie edition and miss the entire "don't pour molasses on the cat" verse).
Taking the course, most of which is good manners and/or common sense -- at least common sense for dealing with Nerf-raised moderns; they'd've fainted dead away at workplace interactions in the small-town jobs two decades ago where I started out -- I learned another lesson: in each segment, you've got three viewpoint characters who offer reactions to the various examples shown, from which you-the-student must choose the right response. If you went through the course and simply assumed the European-American looking male wearing a tie was always wrong, you'd get a passing score.
So write that down, friends and neighbors; remember it whenever Congress or the City Council is in session: whatever pale males who dress nice tell you, it ain't right. Everyone else, it's 50/50.
....Mister course-designer guy? Pro tip? Computers are really, really good at tossing random-enough numbers in the air and applying the results. You could avoid those nasty ol' not-so-subtle subtexts by coinflips for every segment to pick who'll be savvy and who won't.....
(Not really related but does ask the question that has puzzled philosophers through the ages: "If a tin whistle's made of tin, what's a fog horn made of?")
T. R. MCELROY'S STREAMLINED TELEGRAPH KEYS
7 months ago