Are crotch inspections the last grasp of invasive government?

When it comes to protecting against terrorism, this is how things usually go: A danger presents itself; the federal government responds with new rules that erode privacy, treat innocent people as suspicious and blur the distinction between life in a free society and life in a correctional facility; and we all tamely accept the new intrusions, like sheep being shorn.

Maybe not this time.

The war on terrorism is going to get personal. Very personal. Americans have long resented the hassles that go with air travel ever since 9/11 — long security lines, limits on liquids, forced removal of footwear and so on. But if the Transportation Security Administration has its way, we will look back to 2009 as the good old days.

The agency is rolling out new full-body scanners, which eventually will replace metal detectors at all checkpoints. These machines replicate the experience of taking off your clothes, but without the fun. They enable agents to get a view of your body that leaves nothing to the imagination.

A lot of people, of course, couldn't care less if a stranger wants to gaze upon everything God gave them. But some retain a modesty that makes them reluctant to parade naked in front of people they don't know, even virtually. Henceforth, Jennifer Aniston is going to think twice before flying commercial.

Besides the indignity of having one's body exposed to an airport screener, there is a danger the images will find a wider audience. The U.S. Marshals Service recently admitted saving some 35,000 images from a machine at a federal courthouse in Florida. TSA says that will never happen. Human experience says, oh, yes, it will.