From the Nov 1 article:
Originally Posted by Goldberg
"How come you don't go through the machine?" he asks me.
I give him several more answers than he expected:
...
4) I find the specific pose a person is forced to take inside the machine -- hands up, as in a mugging -- particularly debasing.
This interesting reason hasn't gotten much attention.
If "we" the resistance ever want to make a poster/billboard, a photograph of a passenger in the backscatter in the "surrender position" with a caption about surrendering our dignity/liberties might be a useful image.