The standard for sexual harassment must be kept high, and it must be proved. Rape and assault are one thing, but saying “You look nice today” or “I like that dress” is not harassment—sexual or otherwise. Furthermore, anyone who falsely and intentionally accuses a man or woman of rape, assault, or harassment must be subject to suit for damages and perhaps also incarceration.
I think anyone who falsely accuses someone of rape or assault should be up on the same exact penalties of what the person they falsely accused would be up against on those charges.