On Thanksgiving, turkeys and native peoples.

Here's an interesting article.

What did the Europeans give in return? Within 20 years European disease and treachery had decimated the Wampanoags. Most diseases then came from animals that Europeans had domesticated. Cowpox from cows led to smallpox, one of the great killers of our people, spread through gifts of blankets used by infected Europeans. Some estimate that diseases accounted for a death toll reaching 90 percent in some Native American communities. By 1623, Mather the elder, a Pilgrim leader, was giving thanks to his God for destroying the heathen savages to make way "for a better growth," meaning his people.

A native american points out that

It is estimated that there were between 7 million and 10 million indigenous individuals inhabiting what is now America at the beginning of European contact in the early 15th century. By 1900, there were only about 230,000 of us left.

A defender of animal rights says that some 45 million turkeys will die every Thanksgiving Day.
While John Marshall has his own take on the event. By the way, I'm a vegetarian, so I'm not eating Turkey.