<p>some places to start on issues like this might be</p>
<p>[Amazon.com:</a> A Theory of Justice: Original Edition (9780674017726): John Rawls: Books](<a href=“http://www.amazon.com/Theory-Justice-Original-John-Rawls/dp/0674017722/ref=sr_1_1?s=books&ie=UTF8&qid=1305920913&sr=1-1]Amazon.com:”>http://www.amazon.com/Theory-Justice-Original-John-Rawls/dp/0674017722/ref=sr_1_1?s=books&ie=UTF8&qid=1305920913&sr=1-1)</p>
<p>or for a very different POV</p>
<p>[Amazon.com:</a> Anarchy, State, and Utopia (9780465097203): Robert Nozick: Books](<a href=“http://www.amazon.com/Anarchy-State-Utopia-Robert-Nozick/dp/0465097200]Amazon.com:”>http://www.amazon.com/Anarchy-State-Utopia-Robert-Nozick/dp/0465097200)</p>
<p>Im somewhat befuddled that someone who, I guess, majored in some areas of the social sciences, is not aware that there have been debates about the justice of income distribution in society. </p>
<p>Yes, this is about a moral code. There is positive description of how incomes are distributed, and normative discussions of the issue. A debate about justice, (which I saw as part of the article in the OP) is of course a normative one (though it should be informed with empirical information).</p>