Here in the U.S., the issue is currently on low boil since suddenly, the name of a prominent American Professional football Team, The Washington (D.C.) Redskins is raising the ire of the PC crowd. Nearly immediately after the first complaint maybe 5 months ago, many of the Tribal Governments around the country counter-protested the protest, saying they perceived no racial animosity by people using the head dress as a prop. Granted there were others that thought otherwise.
The thing they (and I) would protest is the use of an historical, Tribal Eagle feather headress in, say a comedy skit... totally inappropriate. But that would be difficult since those are closely guarded by Tribal Chairmen or more likely respected 'Medicine Men' (Wichasha Wakan in Lakota language).
By the way, possessing any Eagle feathers, much less a full headdress is a crime with heavy punishment if owned by other than an enrolled Tribal Member.
The other problem is many, many American citizens (myself included) are of Native American descent (mine being Cherokee-Choctaw). Not enough for tribal enrollment, but enough to give more than a passing glance at such discussions...