Of all the many complaints about airport security and the TSA, one of the most common is that they make little distinction between plausible security threats and passengers unlikely to be doing anything wrong.
And a recent incident in Wichita, Kansas has reinforced that argument, as a four-year-old girl was apparently subjected to a humiliating ordeal after she hugged her grandmother while she was waiting in line.
The girl was accused of having a gun and declared a 'high security threat', while agents threatened to shut down the whole airport if she could not be calmed down.
When asked about the overbearing treatment the girl received, a TSA spokesman did not apologise and insisted that correct procedures had been followed.
Four-year-old Isabella's horrific experience in Wichita earlier this month was recounted on Facebook by her furious mother Michelle Brademeyer.
The family was in Kansas for a wedding, and was travelling home to Montana with Ms Brademeyer's mother.
Ms Brademeyer and her two children had passed through security when the grandmother was detained after triggering an alarm on the scanners.
Isabella then, according to her mother, 'excitedly ran over to give her a hug, as children often do. They made very brief contact, no longer than a few seconds.'
The young girl was immediately detained by security agents, who apparently shouted at her that she would have to be frisked too, and refused to let her mother explain what has happening.
Ms Brademeyer wrote: 'It was implied, several times, that my mother, in their brief two-second embrace, had passed a handgun to my daughter...'