Bagpuss
Legend
D&D has an alignment system, for better or worse. It is a bit of a chicken and egg situation most of the time.All the "they are evil" bit does is say to players "therefore it is fine to kill all of them".
Are Orcs evil because they have a culture based on rampaging and pillage, or do they rampage and pillage because they are evil?
In D&D lore they are Evil intrinsically and thus have a culture that reflects that. In Tolkien as well they reflected not a particular race of people but that aspect of all humanity that is brutal, destructive and see strength as justification to do what they like. They are the worst of us, thus evil. If they weren't evil they wouldn't be the worst of us, and they wouldn't be orcs.
I.e., The takeaway lesson is: "if people are raised in a culture we find morally objectionable it's okay to kill them". A pretty solid justification for Islamophobia.
Not really as people are more complex than, individual metaphors for brutality which the orcs represent. People are capable of change, as can their culture even if you find it morally objectionable. Metaphors are incapable of change and still remain the thing they are a metaphor, for.