Just because someone loudly postures as, or sincerely believes he is, a defender of the Constitution does not make him one in fact. McVeigh probably thought he was defending the Constitution. The folks in the ACLU probably think they're defending the Constitution.
Like all things, discriminating judgement is required here to separate obnoxious jerks like the ACLU or a "nonviolent" Christian Identitist (who, IMNHO, are about as non-violent as Muslims :o) from the Earth Liberation Front or The Brotherhood.
The problem is that we've all been conditioned by the media to not be "judgemental" or "discriminating," so we've lost the ability to say that Christian Identity folks aren't Christian, that "defenders" of the Constitution may not be real defenders of the Constitution, and that some of the people who are supposedly on our side are scumbags. (Just because he's OUR scumbag doesn't make him any more palatable. But that's me being judgemental and discriminating, like all those dead white guys who wrote the Declaration of Independence and the Constitution.)
Are the local PDs supposed to read it, or "interpret" it on some higher level?