Racism and Tolkien.

[Legolas]

personally i think you are wrong
notice how all of tolkiens "evil men" in alliance with sauron come from either the south or the east - where men are dark skinned and oriental. how come none of the worshippers of sauron came from the north?

Some of Sauron's supporters did come from the North. Remember the Witch-King of Angmar? Angmar was in the north.

But the biggest reason that not many men came from the north is because there were no men in the north. Men either came from the east/south, or the fallen isle of Numenor. The portion of Middle-earth we know is the very northwest corner. There's nowhere for them to come from.

Also, the men east and south had little/no contact with the elves (except for, perhaps, the Avari) and were not under the superivision of Aman. They were more accessible to the influence of Sauron.