I thought the context was established to be hitting on, as one might do in a bar. The problem with framing it as being about "harassment" is that the term is prone to equivocation in these types of discussions. Some would argue that any attention of a sexual nature would be harassment. This is probably true in professional settings, but the grandparent established the context of discussion as a bar setting. This is what I was replying to.
How to handle actual harassment and assault is obvious: you call the fucking cops. I'm not sure why that warrants a discussion at all.