I suspect that the violence, when it occurs, will be in the other direction.

These front line clerks are not exactly anger management and conflict resolution specialists. They know what they are doing is hated. Many of them privately detest what they are doing but they need the job. They hear the comments of disgusted and angry passengers directed toward them all day every day. One clerk with problems at home and a domineering stupid supervisor pushing them will be the one to lash out and physically attack a passenger.

The passengers know that they must only cope for a few minutes. It is an all day job for the clerks. I'm not saying I feel sorry for them. They are being abused as well by their bosses by being put in this position.

Going TSA may take on the same connotation as going postal before this is over.