LOTR is Scandinavian mythos: a long way from the Med. The dark-skinned races are outsiders and -- when they arrive in force -- alien invaders, interested in rapine and conquest.
But, as others have already attempted to inform you, the problem isn't the inclusion of other races. It's doing so for reasons of socio-political agitprop, rather than for entertainment.
Amazon has built a business model around allowing honest reviews of their products. When they break that model, their customers rightfully become upset.
On the contrary, when you pay a fair price, you expect a fair product. If a show doesn't provide the entertainment it promised, it gets panned. This rule is millennia old: in Medieval times, a bad actor or playwright might be paraded through the streets and pelted with rotten vegetables. In the Roman era, a bad gig in the Coliseum cost you your life. Today, we just leave bad reviews.