Christopher Columbus
Since the late 20th century, historians have criticized Columbus for initiating colonization and for abuse of natives. Among reasons for this criticism is the poor treatment of the native Taíno people of Hispaniola, whose population declined rapidly after contact with the Spanish. Columbus required the natives to pay tribute in gold and cotton. Modern estimates for the pre-Columbian population of Hispaniola are around 250,000–300,000. According to the historian Gonzalo Fernandez de Oviedo y Valdes, by 1548, 56 years after Columbus landed, and 42 years after he died, fewer than 500 Taíno were living on the island. The indigenous population declined rapidly, due primarily to the first pandemic of European endemic diseases, which struck Hispaniola after 1519. The natives had no acquired immunity to these new diseases and suffered high fatalities. There is also documentation that they were overworked.
Genocide of indigenous peoples
It is estimated that during the initial Spanish conquest of the Americas up to eight million indigenous people died marking the first large-scale act of genocide of the modern era. Acts of brutality in the Caribbean and the systematic annihilation occurring on the prompted Dominican friar Bartolomé de las Casas to write "Brevísima relación de la destrucción de las Indias" ("A Short Account of the Destruction of the Indies") in 1552. Las Casas wrote that the indigenous population on the Spanish colony of Hispaniola had been reduced from 400,000 to 200 in a few decades. His writings were among those that gave rise to "Leyenda Negra" (Black Legend) to describe Spanish cruelty in the Indies. Noble David Cook, writing about the Black Legend and the conquest of the Americas wrote, "There were too few Spaniards to have killed the millions who were reported to have died in the first century after Old and New World contact" and instead suggests the near total decimation of the indigenous population of Hispaniola as mostly having been caused by diseases like smallpox.