From CNN: These states are ditching Columbus Day to observe Indigenous Peoples' Day instead

An example of federalism, among other things.

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Columbus Day has been a political lightning rod for states, cities and municipalities around the US for years now. Some have decided to do something about it.

A number of states have moved to officially observe Indigenous Peoples' Day, or some version of it, instead -- a holiday to recognize the native populations that were displaced and decimated after Christopher Columbus and other European explorers reached the continent.

Most prominently, President Joe Biden became the first US president to issue a proclamation commemorating Indigenous Peoples' Day, writing that Monday was a day on which the country "celebrates the invaluable contributions and resilience of Indigenous peoples, recognizes their inherent sovereignty, and commits to honoring the Federal Government's trust and treaty obligations to Tribal Nations."

Columbus Day is technically a federal holiday, which means it is recognized by the US government and thus brings the closure of non-essential government offices, and, usually, places like post offices and banks.