Ezra Klein broadens the debate:

Paul's defense of himself is that his view on the Civil Rights Act has nothing to do with race and so he is not a racist. But by the same token, the fact that Paul's view on the Civil Rights Act is so dominated by his libertarian ideology that he cannot even admit race and segregation into the calculus is exactly why this is relevant to Paul's candidacy, why it's an issue and why it's among the best evidence we have in understanding how he'll vote on legislation that comes before him. If this isn't about race, then it is about all questions relating to federal regulation of private enterprise, and Paul will be asked to vote on such questions constantly.

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