thanksgiving is happy, killing them was not

I want to guide my children in the truth as they grow up. For instance, it's great to celebrate Thanksgiving. I love the time with family, the extra time off work, the long weekend. I like celebrating how Native Americans save the Pilgrims in 1621 by helping them fish and cultivate their land. However, I also think kids (as they get old enough to understand) should also know some of the rest of the story.  How we weren't always grateful and great friends with our Native American neighbors. I think we should teach how yes, we are to be thankful. But also how we later mistreated our new neighbors and how that was wrong. Just saying.