Here are some reasons supported by reputable sources depicting Christopher Columbus as a controversial figure:

1. Treatment of Indigenous People: Christopher Columbus and his expeditions had a significant impact on the indigenous population of the Americas. He initiated a wave of colonization, enslavement, and forced labor, leading to the suffering and death of countless indigenous people.
2. Genocide and Slavery: Columbus’s actions resulted in widespread violence, enslavement, and the decimation of indigenous communities. The atrocities committed by Columbus and his followers have been widely recognized as part of a larger process of colonialism and genocide.
3. Cultural Destruction: Columbus’s arrival brought about the subjugation and erasure of indigenous cultures and traditions. The imposition of European values and practices led to the suppression of native languages, beliefs, and ways of life.

For further information, you can refer to the following sources:

• Wikipedia – Christopher Columbus
• University of Southern California – Christopher Columbus: The Villain

It is important to note that the cartoon advocating for Indigenous People’s Day in place of Columbus Day aims to highlight the historical context and raise awareness about the negative impacts of colonization.