"Middle Earth" was an old phrase used to refer to Western Europe in several Scandinavian languages. Tolkien, being a linguist, would have known this and chosen that turn of phrase deliberately.
PS: read "you" as in the collective you, not you specifically.
The problem with line of thought is that Lossarnach which mustered to Minas Tirith during the seige of Gondor were described as swarthy (i.e. dark skinned).
Also, the Easterlings were poignantly humanized by Sam.
"It was Sam's first view of a battle of Men against Men, and he did not like it much. He was glad that he could not see the dead face. He wondered what the man's name was and where he came from; and if he was really evil of heart, or what lies or threats had led him on the long march from his home; and if he would not really rather have stayed there in peace all in a flash of thought which was quickly driven from his mind."
All of this is a far cry from the stark dark people bad racism you've posted about a couple of times now.
Finally, the orcs also had slanted eyes, did Tolkien also hate Asians? Are Orcs supposed to be African or Asian? Pegging orcs as "dark people" simply doesn't fit as orcs don't closely match any ethnic group in particular. Orcs aren't even a single race for that matter. In any case, dark skinned=bad sounds a lot like allegory, which Tolkien finds distasteful. It is my theory that due to the time we all live in, you are (subconsciously most likely) hammering a square racism peg in a round hold.