The idea to celebrate Native American history on Columbus Day was first raised in 1977 at a United Nations conference in Geneva. South Dakota started celebrating Native American Day in 1989, and a few other cities changed the name in the next 25 years. Since 2014, however, more than 100 governments have switched the name. Last year, Prince George’s County, Washington, D.C., and a handful of states made the pivot away from Columbus Day. In July, Montgomery County also changed the name of the holiday to Indigenous Peoples’ Day.