It drives me nuts

Listening to NPR morning edition today, as I frequently do.

They interviewed the proud mother of an Illinois soldier who had received multiple medals during four tours of duty in Iraq.

The guantanamo prisoners are coming to the nearby prison, and she said that bringing 'terrorists' there is a 'slap in the face' to her son's service.

Will someone explain to her that (unless the real reason is oil), her son's overal purpose for being there was to help establish our beloved (rightly so) principal that every accused person is both presumed innocent and guaranteed a trial?

Why is this so difficult, both for Mom to understand and for NPR to mention?