I agree with Xvim.
Its makes sense to say: "Most members of race x are good/evil/lawful/chaotic because the society they live in is as it is and this is considered good or evil by most other races or even themselves.
You can go into debate on what is good or evil, or nature vs nurture, but it is irrelevant.
One mans hero is another mans monster and all that jazz. Personally, instead of some global, universal good/evil, I look at it more localized. Good for WHOM? Bad from WHOM?
Since it's fantasy, I'm fine with races being FULLY, 100% good/evil. Which is odd, since I'm usually all for moral greyness and I'm not fond of restrictions - honestly I prefer classless, aligment-less solutions.
But the trope of "evil race X, but you have a companion from that race that is good" is one of my most hated tropes.
