According to NPR Indigenous Peoples Day (IPD) was first proposed in 1977 at a United Nations conference on discrimination against them but it wasn't until 1989 that South Dakota switch out Columbus Day for Indigenous Peoples Day.  Berkeley, CA was the first city to do so and many states and cities have made the change even our own Columbus Ohio has done so   https://www.npr.org/2019/10/14/769083847/columbus-day-or-indigenous-peoples-day

The states listed below and the District of Columbia now observe Native American or Indigenous Peoples’ Day, in place of or in addition to Columbus Day. Most of them have followed the lead of their cities and smaller communities:

▪ Alabama ▪︎ Alaska ▪︎ District of Columbia ▪︎ Hawai’i ▪︎ Idaho ▪︎ Iowa ▪︎ Louisiana ▪︎ Maine ▪︎ Michigan

▪︎ Minnesota ▪︎ New Mexico ▪︎ North Carolina ▪︎ Oklahoma ▪︎ Oregon ▪︎ South Dakota ▪︎ Vermont ▪︎ Virginia

https://www.smithsonianmag.com/blogs/national-museum-american-indian/2020/10/12/indigenous-peoples-day-updated2020/

Here is a website that lists the cities that celebrate Indigenous Peoples Day.  This includes our own Columbus, Ohio.   https://indianyouth.org/cities-states-celebrate-indigenous-peoples-day/

As you notice Ohio is not one of the states, but Columbus, Ohio does celebrate Indigenous Peoples Day.  Because of our history and the mounds, of which we are so proud, Marietta, Ohio should provide the leadership in supporting the move by acknowledging Indigenous Peoples Day.