People of any political stripe are against vulgar harassment in the workplace, I, and I think many other people are afraid of the Frankensteins the law would unleash, due to carelessness, vagueness, (among a multitude of other possibilities) ... of the law. 
Take for instance the shouting during during sessions, is that harassment? Is a player being booed? Is a boss saying "you need to smarten up, or we'll have to fire you"? These all seem blatantly not, but with the right poorly constructed legislation and the "living" document our rights are, you can get this.
And it may just be as, if not more, worse than no law.