Matt Coles at the ACLU has written an interesting blog post outlining some major reasons why the repeal of Don’t Ask Don’t Tell is so important. One of his points especially resonated after last week’s firestorm around Republican Senatorial Candidate Rand Paul:

Second, we need to get rid of DADT because it is a blot on the Constitution. DADT enshrines in federal law a principle which had been rejected in most other contexts: that discrimination could be justified by the prejudice of others. In the 60s, businesses in the South said that the prejudice their customers had against black people ought to give them an exemption from discrimination laws. Congress and the courts disagreed. In the 80s, government agencies actually defended discrimination on the basis that neighbors (or others) had strong negative feelings about disabled people, “hippies” and even older people (in Miami of all places). Again, the courts disagreed. But in the Congress that passed it, the single justification for Don’t Ask, Don’t Tell was not that gay members of the Armed Forces couldn’t do their jobs. It was rather that heterosexual service members would be so unnerved by the mere presence of gay people that they would be unable to perform theirs. As long as DADT endures, the idea that your rights can’t be taken away just because someone else doesn’t like you is hardly secure.

Last week, Rand Paul struggled to defend his view that the government should allow private enterprises to discriminate against people based on race, gender, or sexual orientation. He was forced to backtrack on his position after his statements were shot down by civil rights groups, the media, and members of his own party. His reasoning essentially amounted to the idea that the government has more of a duty to protect the right to discriminate than to protect those who are discriminated against. Sound familiar?

That’s a false and outdated interpretation of the Constitution—one that didn’t hold water in 1964, and doesn’t today.

(And, as a sidenote, check out the American Prospect’s takedown of another one of Paul’s perversions of the Constitution).