How is history presenting an inaccurate representation of the cultural encounter between Colum- bus and the Arawaks?

When Columbus arrived on Cuba, Hispaniola and other islands in the Caribbean he instituted shockingly cruel and genocidal policies which rapidly decimated the populations of indigenous Arawak Indians. He was also a slave trader, and his own words condemn him

china unilaterally claims the entire south china sea as sovereign territory, then builds artificial islands to bolster its claim. it suddenly activates an air defense identification zone over the east china sea, and threatens to down any aircraft that does not report its position. it builds roads into indian territory, then redraws the maps to show that it is actually chinese territory. the people's republic under president xi jinping is quickly becoming the bully of asia.