yeah, I would get over it if I hadn't been hearing it all my life. third paragraph into that section. I don't appreciate being referred to in a derogatory fashion (unless you intend to be insulting)
well, that's because they aren't derogatory terms. I equate redhead to blonde and brunette - blondes, brunettes and redheads, not blondes, brunettes and gingers.
this post probably answered your question
I actually classify ginger and red as two different hair colours, generally speaking. I don't personally intend to cause offence by classifying people by hair colour, but I appreciate that some people do.
I even have a "token ginger" friend!