Then it sounds like a very lackluster and pathetic response to a problem. How many of those instances are going to get noticed by campus officials if their presence isnt ramped up? Barely any if any at all. A much more effective way would seem to be is to make sure that the students themselves have the courage to go up to someone wearing an offensive costume and telling them that line, which is, interestingly enough, exactly what the professor who quit was trying to tell students to do.
As for laws, do you want students to call the campus police and have them take care of the offensive costume problem. Do you want them to investigate those offensives? If not, then I think there is a key difference than any law and this.
Who is going to do this though?
How are they going to decide what is considered offensive on the spot?
There's not much room for interpretation of blackface, but what about costumes that some might consider offensive, but others might not?
Who gets to decide that grey area?
I think you are overestimating the certainty with which a clear and intolerable offense can be distinguished from a potentially intolerable offense. For instance, would it be intolerably offensive to wear a t-shirt with a Charlie Hebdo cartoon of Muhammad? A significant number of people would say yes. And they would draw parallels to the arguments made in the prohibition of potentially offensive halloween costumes. Others, on the other hand, would see it as highly problematic to prohibit it. Or is it offensive to allow a controversial speaker to speak at a university? We have had numerous examples of speakers being prohibited from accepting an invitation to speak at universities, because certain people found the mere expression of a disputed view point intolerably offensive.
It is worth being defensive and skeptic about how much the criticism of ideas and expressions has to be implemented through administrative means or even permanently institutionalized. Especially because institutionalized responses are not the only means through which such ideas and expressions can be criticized. Authoritarian means should not be used lightly. And as I said, in the real world they are not even available in many situations.
Try, for instance, to forbid your boss or an important client from being chauvinistic to female coworkers by invoking some authority. There will be none, at least not in most companies. And there are many more situations like this.Many times there simply does not even exist an institution that could enforce behavior. You'd have to deal with this situation differently. And a university should educate their students with this reality in mind.
Okay, even though the two don't work entirely in parallel in terms of theme or equivalency, let me put it this way: you could compare disciplinary action taken in the event of problematic costuming to drinking at a similar college party. The level of urgency in action and offensiveness in certain costumes operate on a spectrum in that some are clearly unwanted whereas others may simply be questionable. For example, blackface can be analogous to someone getting absolutely shitfaced to the point that they're a detriment to the party, potentially harming others, etc. Granted, there may be a few assholes egging them on, under the premise that blackface is just a case of existing, existentially speaking - but it's ultimately acting to harm the majority of the party. There's really no meaningful discourse to be had in this situation, and if the person in question is uncooperative,
that's the point at which the administration would need to come in and escort the individual out of the party or tell them to change / sober up before coming back.
Now, let's take a less cut-and-dry example in the Charlie Hebdo illustration: this would likely spark a
discussion more than anything else, and likely
would not require administrative intervention. It's comparable to someone being kind of a dick when they're drinking, but not to the point where they're actually bringing the party down. This has a couple of potential outcomes: a mutual understanding could be reached and the person in question could change (or stop drinking), the person could leave (or could leave), the person could continue going about their business at the party but just be regarded as kind of a dick by the offended in question (the person could keep drinking / being a dick), and so on, and so forth. Again, really not seeing where people are interpreting this as "anything remotely offensive as defined by the most outragiest SJW at the party gets aggressively removed from campus by the SWAT PC Riot Police, because free speech is dead."
Offensive costumes and disparaging remarks amoung adults are equivalent to universal suffrage and equal rights with institutional actors?
They're a proponent of it, which is the point. If GAF was around 75 years ago and someone made a "Racial tensions over water fountains lead to angry confrontations" thread, people would probably be asking the same thing. "Reasonable children and adults being denied access to a water fountain - that's totally equivalent, mechanically speaking - are equivalent to desegregation and being given rights analogous to those of whites?" If people don't bother to have discussions where minority privileges, in modicum, are questioned - relative to the freedoms majorities already possess - then no, nothing
will ever change.