Somehow, I don't think the journalism professor who wrote this piece is a political conservative. In fact, based on his writing here, I'm quite sure he's part of the "Hate America First" crowd. And they're lefties.
We should get rid of Thanksgiving and instead atone for "genocide" committed centuries ago? I'll think about that as I head over to the nearest Indian Casino, about 20 min from my house.
Update: Here is the only known contemporary account of the first Thanksgiving. It comes from a letter dated 1621 from Edward Winslow. This page includes Winslow's account as well as William Bradford's comments written about 20 years later.