Columbus Day is celebrated in the United States to mark Christopher Columbus’s landing in the Americas on October 12, 1492, and to honor him as a symbol of exploration, European settlement, and (for many) Italian American heritage. Today, it is also a controversial holiday, with many people instead promoting or celebrating Indigenous Peoples’ Day to recognize Native communities and the harms that followed European colonization.

What Columbus Day commemorates

  • The holiday centers on Columbus’s first voyage across the Atlantic and his arrival in the Caribbean in 1492, long mythologized as the “discovery of America” in U.S. culture.
  • It is observed on the second Monday in October and became a recurring federal holiday after political lobbying in the early 20th century.
  • Supporters frame it as honoring a pioneer of the so‑called “Age of Discovery” and the start of continuous European presence in the Western Hemisphere.

Historical roots of the holiday

  • A large national celebration of Columbus took place in 1892, partly to ease tensions after the lynching of Italian immigrants and to honor the 400th anniversary of his voyage.
  • Italian American groups, especially the Knights of Columbus, pushed hard in the early 1900s to make the date an official patriotic holiday, linking Columbus with Catholic and Italian identity.
  • In 1937, President Franklin D. Roosevelt proclaimed Columbus Day a yearly national holiday, cementing it in the federal calendar.

Why some people still celebrate it

  • For many Italian Americans, the day is an ethnic pride celebration, emphasizing their community’s contributions and using Columbus as a unifying historical figure.
  • Advocates say it recognizes exploration, navigation, and cultural exchange between Europe and the Americas, including the later waves of immigrants who helped build the United States.
  • Some recent presidential proclamations explicitly praise Columbus as an “American hero” and defend monuments and the holiday as part of a proud national story.

Criticisms and Indigenous Peoples’ Day

  • Critics highlight that Columbus’s arrival ushered in conquest, forced labor, disease, and displacement for Indigenous peoples across the Americas.
  • Native and social‑justice activists argue that celebrating Columbus erases Indigenous histories and normalizes colonial violence.
  • In response, many states, cities, and institutions now mark the second Monday in October as Indigenous Peoples’ Day—either instead of or alongside Columbus Day—to honor Native cultures and resilience.

How the debate looks in forums and trending discussions

  • Online discussions often split between those who see Columbus Day as an ethnic or patriotic tradition and those who see it as incompatible with modern awareness of colonial harms.
  • Some commentators argue for entirely replacing Columbus Day, while others support a dual observance of Columbus Day and Indigenous Peoples’ Day as a compromise.
  • The controversy tends to resurface every October, keeping “why is Columbus Day celebrated” and related debates as recurring trending topics in U.S. news and forums.

TL;DR: Columbus Day is celebrated because the U.S. chose Columbus’s 1492 voyage as a symbol of exploration, national identity, and especially Italian American pride, but it is increasingly challenged or replaced by Indigenous Peoples’ Day due to the violent colonial history his voyages set in motion.

Information gathered from public forums or data available on the internet and portrayed here.