The event is slated to include fighter jets thundering over the 79-year-old stone monument in South Dakota's Black Hills and the first fireworks display at the site since 2009.

But it comes amid a national reckoning over racism and a reconsideration of the symbolism of monuments around the globe. Many Native American activists say the Rushmore memorial is as reprehensible as the many Confederate monuments being toppled around the nation.

"Mount Rushmore is a symbol of white supremacy, of structural racism that's still alive and well in society today," said Nick Tilsen, a member of the Oglala Lakota tribe and the president of a local activist organization called NDN Collective. "It's an injustice to actively steal Indigenous people's land, then carve the white faces of the conquerors who committed genocide."