Ha! Of course you'll need some wine to go with that:
But of course Washington didn't issue a thanksgiving proclamation for the slaughter of defensless Indians....
"George Washington was the first to issue a Thanksgiving proclamation in 1789. In this proclamation he asked Americans to be thankful for the "happy conclusion to the country's war of independence and the successful ratification of the U.S. Constitution."
Read more at http://www.snopes.com/holidays/thanksgiving/washington.asp#lxOlPyRUT8IoiXRU.99"