Re: Can't charge...what rubbish.
@gnasher729
"I thought the accuser would be the prosecutor, or the state in general . . ."
I had to think about this because my first response was (literally): "abso-fucking-lutely". But, on further reflection, touching someone's crotch and groin is not a crime. Nor is it a crime to be driving someone else's car or to walk out of someone else's apartment with their TV.
These things are all perfectly legal, provided that they are consensual.
In these cases, what makes them a case for law enforcement is that someone is complaining about the behaviour and wishes to press charges.
If your ex-wife 'keys' your car one day then that is clearly malicious damage but it's your car so, while the perpetrator can be arrested, she can't be charged if you don't want to.
Some acts, of course, are considered criminal and the perpetrator can be charged regardless of whether the 'victim' wishes to press charges or not. This is the case in what is commonly known as 'statutory rape'. This is when an adult has sex with a minor because even if the minor says it was consensual, if they are below the legal age of consent, then it is a crime.
So, while I really believe that this behaviour by the TSA staff was utterly reprehensible, I do understand why they can't be charged with a crime.
That said, this matter should be in police hands and they should make every effort to identify the person involved and give them the opportunity to press charges. And the TSA should be URGING the police to do so with all possible zeal.