Loudly articulated pet theories are part of the Chris Matthews brand, so much so that nobody raised much of a fuss last night when the Hardball host declared white NBA players among the beneficiaries of affirmative action. Thankfully, Eugene Robinson was on hand to observe what a shock this news will be to Steve Nash and Dirk Nowitzki. (Hat tip to Sportsgrid, skip to about 5:30 for the hoops talk)

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