Why can we not see?

Why can we not see that cruelty to any being is

unnacceptable [sic]? Then, once we realise this, why can we not see that we are being highly speciesist to assume we are superior thus giving us some inherent “right” to exploit another being for our personal gain? It is incredible how much this reminds me of sexism and racism and then that just reminds me of how backward as a species we really are.
~ Amy Kauler (June 3, 2009)