But you're (the general you) blaming on someone who's not in charge. She ONLY did her job. She was told to stay at the counter and that's it. The whole store is to blame, and definitely it's owners/management/employers.
No, that's ridiculous. You make businesses look completely unreasonable and illogical with that point of view. They tell cashiers what to check id for, I remember reading an article awhile back describing that in most of these places even the computers warn cashiers to check id on M rated games. It's a reasonable system, because if stuff like this happens, a cashier sells something that they're told they have to check id for, how does that make the retailer LOOK? That IS her job, these stores make sure she knows it, because they get a lot of negative attention if there's any way they can be blamed for the sale, hell they'll even get blamed after all this. Her job is to check ID, and only sell if they're the right age. She won't get fired for not selling it, just like people at gas stations or ticket vendors at theaters aren't fired for checking id first, it makes the business look more respectable when they do that. So that makes individual employees accountable when they do something like this blatently.
However, Jacko's an idiot. He proved that in order for him to try to debase the industry as a whole, he has to use an isolated example at a terrible retailer that's known for screwing things up (go ahead, ask about my car's stereo), buy their product, AND use his family as a tool to get it. Someone's really gotta kill this guy's judge jury and executioner complex because by now it's clear to EVERYONE, even his own demographic I'm certain, that he's a disgrace.