Like someone else said, I would urge some Americans to have a bit more self-awareness about a lot of these issues, in that they are not absolute issues but america-specific ones (not slavery in general of course, but the modern guilt about slavery and racial segregation that is still a bit of an open wound in the USA).
A lot of the 'obvious' connotations to americans about words are simply not there for the larger anglophone world. That doesn't make their concerns invalid - just that it's not 'obvious' that the choice of words is poor.
I make no comments on the merits of this particular issue, just a general point about the context in which a lot of the debates are held, especially with non-american english speakers (e.g. antirez).