There's to me three bad layers of appropriation: 1. Insult. Pretty self-explanatory: you turn their symbols into mockery. 2. Deliberate/Neglectful Misrepresentation. You use their symbols as something they are not while appearing to be authentic and create a false perception of that culture in the audience's mind. Often this is how symbols end up becoming the cliche and caricatures of point 1. Might as well nip that in the bud. 3. Economic profiteering. A more socially or economically powerful person or group turn the symbols and culture of a historically disadvantaged group into a key part of a moneymaking industry while the disadvantaged group get nothing from it. Aside any morsl argument, this is simply a matter of giving those people better access to resources to develop their held-back economy. If their culture is valuable, let them get value for it.