What alignment is Oona?

[Friv]

As Roy himself noticed, most people would kill ogres - or bugbears - on sight , even if those "monsters" are only attending a concert.

Kind of the whole point of that story was that killing the orcs because they were inconvenient would have been evil.

As Redcloak noticed, the Sapphire Guard thinks nothing about pursuing and exterminating goblinoids even very far away from their territory.

Well first off, Redcloak is not telling the truth. Regardless of how evil their actions were (quite, incidentally) the Sapphire Guard that attacked his home weren't on a random mission of goblin killing. They were seeking the Bearer of the Crimson Mantle, a particular high priest of an evil god on a mission to unleash a terrible ancient evil that the Sapphire Guard's entire mission is to keep contained, and they killed everyone in the village because they decided that those people were all followers of the Crimson Mantle and thus reasonable enemies.

The Sapphire Guard in that situation was wrong, and committed a very evil act, but they were still operating with more justification than Oona.

Therefore, I can accept that Oona is Evil only if many, many "civilized" races are evil too.

No, many "civilized" races aren't evil. But many "civilized" individuals are.