Anti-racism includes beliefs, actions, movements, and policies adopted or developed to oppose racism. In general, anti-racism is intended to promote an egalitarian society in which people do not face discrimination on the basis of their race, however defined.
By its nature, anti-racism tends to promote the view that racism in a particular society is both pernicious and socially pervasive, and that particular changes in political, economic, and/or social life are required to eliminate it.
The European origins of racism spread to the Americas alongside the Europeans, but establishment views were questioned when applied to indigenous peoples. After the discovery of the New World many of the clergy sent to the New World, educated in the new Humane values of the Renaissance blooming but still new in Europe and not ratified by the Vatican, began to criticize Spain and their own Church’s treatment and views of indigenous peoples and slaves.
In December 1511, Antonio de Montesinos, a Dominican friar, was the first man to openly rebuke the Spanish authorities and administrators of Hispaniola for their “cruelty and tyranny” in dealing with the American natives and those forced to labor as slaves. King Ferdinand enacted the Laws of Burgos and Valladolid in response. However enforcement was lax, and the New Laws of 1542 have to be made to take a stronger line. Because some people like Fray Bartolomé de las Casas questioned not only the Crown but the Papacy at the Valladolid Controversy whether the Indians were truly men who deserved baptism, Pope Paul III in the papal bull Veritas Ipsa or Sublimis Deus (1537) confirmed that the Indians and other races were deserving men, so long as they became baptized. Afterward, their Christian conversion effort gained momentum along social rights, while leaving the same status recognition unanswered for Africans of Black Race, and legal social racism prevailed towards the Indians or Asians. However, by then the last schism of the Reformation had taken place in Europe in those few decades along political lines, and the different views on the Value of human lives of different races were not corrected in the lands of Northern Europe, which would join the Colonial race at the end of the century and over the next, as the Portuguese and Spanish Empires waned. It would take another century, with the influence of the French Empire at its height, and its consequent Enlightenment developed at the highest circles of its Court, to return these previously inconclusive issues to the forefront of the political discourse championed by many intellectual men since Rousseau. These issues gradually permeated to the lower social levels, where they were a reality lived by men and women of different races from the European racial majority.
reference : https://en.wikipedia.org/wiki/Anti-racism