Allan Conn wrote: "we wouldn't say to a black Scottish person that they shouldn't feel comfortable singing trad Scottish songs because they are a different race?"

[tongue in cheek] I think that we will have become truly enlightened when a black Scottish person can sing a trad Scottish song expressing centuries-old hatred for the English, and a black English person, hearing it, can be offended. That's true assimilation, on both sides. [removes tongue from cheek]

Standing back a few light-years from the specifics, I hope that human individuals learn to internally question any call to identify with a group; but I'm not holding my breath in expectation of this (disidentification) becoming fashionable any time soon.