So why was Coke using this training to begin with? Coca-Cola so far has not disavowed the views in the training slides, or Robin DeAngelo (who's work the material was pulled from), They only denied that it was required, not the substance of the material, which is telling.
Racism against whites is wrong for the same reason that racism against blacks, Asians, and Hispanics is wrong. Racism is a form of collective punishment. It lumps in the good with the bad of a particular race and that's not fair to the individual.