By almost any available metric equality simply does not exist. Any reasonably apt person has looked at the standard distribution of intelligence and the mathematically certainty has hit them; 'average is pretty stupid, and half the population has to be less'. Countless other examples exist, including the golden calves of race and gender. These thoughts have been used and abused throughout all history. People react in differing ways, some want to crush those 'beneath them', others want to ignore it and embrace everyone as 'one'.
A thought that weighed heavily on Shakespeare's mind, among many others, were the things that are universal, the things that do bind us as equals. Life and death.
Choice! Aye there is the rub. We do not choose the manner of our birth nor (for the most part) our death. I think it was Adam Johnson who first linked this concept with that of equality. The analogy of birth was taking all the characteristics of humanity; our personality, our physicality, our experiences, our potential and our opportunities and putting them in a opaque bag which, once shuffled, would be redistributed at birth. With this is mind, now design a society, a government, an economy and a culture around this limitation. With this in mind, design how you would wish to live and what kind of world you would want passed on to your descendants.
This is the only way I have been able to retain my sanity and hold the apparently mutually exclusive concepts of 'there is no equality' and 'striving for equality is noble' as both true.
And I applaud this article, because I have long believed that the most dangerous of all things is thought.