CBNNews.com - On Thanksgiving, millions of Americans will gather around their tables to thank God for their many blessings. But some Americans say it's not a day to give thanks at all.

Instead of celebrating Thanksgiving this Thursday, some Native Americans will instead observe what they call a "national day of mourning."

One Native American Web site says it's a myth that Thanksgiving is a happy time. For many indian people, the site says, Thanksgiving is a time of mourning, of remembering how a gift of generosity was rewarded by theft of land and seed corn, extermination of many from disease and gun, and near total destruction of many more from forced assimilation.

As currently celebrated in this country, "Thanksgiving is a bitter reminder of 500 years of betrayal returned for friendship," the site says.

Radio talk show host and author Michael Medved says the belief that America's founding brought genocide to Native Americans is one if The Ten Big Lies about America which is also the title of his latest book.

Medved spoke with Pat Robertson on The 700 Club Monday about his new book. Click play to watch more. 

*Original broadcast November 24, 2008.