Fair enough. And, frankly, that's why I haven't posted the myriad of stories that are on blogs or in combox sections of web pages, as I don't want to spread half-truths.
But what do you suggest to do for validation? Wait until a second source has reported it? That means nothing. Look for video? Again, it means nothing.
No, nobody wants to see a TSA agent decked who is doing his or her job. OTOH, I personally have run into exactly two (since the creation of the agency) who needed decking. A significant minority...but they do exist.
Use witnesses. The agents don’t want to be alone with passengers & it can be avoided. You have the right to have someone with you if you opt to be screened in private.
Some of the stories I’m seeing are just hard to believe. A witness would make all the difference.
At our local airport, the local cops are always handy at the checkpoints & can be used as witnesses.
Some people are crazy & make stuff up. They’re often the loudest.
Some of what is being reported as absolute truth is in direct violation of TSA procedures, per the TSA agents I talk to. Thus, either someone at TSA is violating policy or the complainant is lying.
Having a witness handy solves a lot of problems.