ネイティブアメリカン・ヘリテージ・デーは連邦の祝日ですか？ - CountyOffice.org
Native Americans react: President Joe Biden declares Indigenous People's Day a federal holiday
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New Yorkers Call for Indigenous Peoples’ Day & Removal of Columbus Statue
Holiday Honors Indigenous People Instead of Christopher Columbus
Museum Of The American Revolution Celebrates Native American History, Culture
Understanding Indigenous Peoples' Day | VOA News
