Powell's finest moment was when he told Tom Brokaw that what really bothered him about the sinister rumors labeling Obama a secert Muslim wasn't that they were a lie; it was the suggestion that there was something un-American about being a Muslim.
There's a very good reason the Founders thought it necessary to include Freedom of Worship in the Bill of Rights. They knew first hand that religious conflict was among the most emotionally engaging variety and that a properly formed Government has no business inserting itself into it.
Almost everything in the Bill of Rights is there because the things it prohibits are exceedingly tempting. If coercive interrogation weren't a real temptation then there would be no need for a rule against self-incrimination. If intrusive searches weren't a real temptation, then there would be no need to spell out warrant requirements. And if there weren't a real temptation to impose a particular faith on people against their will, then there would have been no necessity to explicitly prohibit it.
It is therefore unsurprising that the battle to preserve our rights is ongoing. In that sense they are unnatural and require positive effort to keep them intact.