Even that marginalized group is comprised of various people. Some care a lot, some don't care, some have different takes on the matter. Without concrete polling, you have no clue if you're doing what that "group" wants or does not want. Like everything else, society has to guess and estimate. Even with polling, if 80 percent of Native Americans dislike Rowling's use of their culture, then what? Do you lean towards the 80 or the 20?
There's no real easy answer. And the problem is people want an easy answer.
For example, some black people prefer to be referred to as "black". Some prefer African-American. So which one do you use? I find your best bet default to one and when someone says they prefer another, use that one around them.
At some point you have to say "Oh, I'm hearing enough people talking about this or I feel this person has enough authority that I should listen". Or even a single voice that's saying something that resonates. That's not always an easy thing to figure out, but your other option is just to listen to no one at all.
Yeah, but that exactly is my point.
I certainly don't want easy answers. I can live with a complex world perfectly well.
The thing is, and I don't think I'm alone with this feeling (yeah, I'm very well aware of the irony of that sentence), is that in some situations, you simply can't do things correctly. Which fits Rowling's situation pretty well, I'd argue, as others have already said. And, at least
to me, that is what comprises the rather stupid term of "outrage culture". That even if I make an honest attempt to do things in
a (notice the emphasis) correct way, I'm still chastised in the same way as if I were one of those who simply don't care about a topic at all. Before anyone claims that my feelings are being hurt: I couldn't care less.
But I believe it makes people sick of trying to do things the correct way if the end result is the same. And don't give me any of that "If you were a real ally..." stuff. First of all, allies support your cause anyway. But maybe getting basically oblivious people with a trace of sympathy for your cause supporting you full-on would help? Sure, you may not
need that, but it surely would get easier that way, wouldn't it? And no, you don't get that by saying "Maybe you tried, but you did it WRONG, so do it correctly next time or else". Whoever believes that lacks either a look outside their filter bubble or empathy.
I even get that, from the "other side", you get tired pretty quickly of people not caring about your ideas if you try it by charming them. But I think by doing what I described above you're gliding into a black-and-white approach and I don't think that helps either.
À propos: some arguments used strike me as pretty communist (or rather Marxist, to be exact) in their origin, with that idea of different groups in a society fighting against each other for power. I'm not quite sure if ideas about a industrialising society should be applied to modern struggles of minorities.