In your blog of the recent topic you discussed you wrote:
"Now what about the terms used for black Americans? The following terms, which were considered acceptable in their day, were Negro, black, Afro-American, and now African-American, although black is still used. Why was there a need for those changes? None of this would bother me if it weren't for the fact that I'm still called white, not European-American.
Shouldn't "none of this" be "none of these? if not, then why?