Now, I don't mean to sound judgemental here, but the group of mexicans looked like what someone might call a sterotypical "gangster" with their clothes and appearance. I'm not saying they are. I don't even know any of them. But with the way the cashier acted, it was as if he believed they were, immediately judging them on their looks only. Whereas me on the other hand, in his eyes, I probably looked harmless based on my appearance and nice clothes as I was wearing a fancy sweater at the time. Maybe I'm overthinking things as it simply could be the fact that they entered in as a group and so it would have been eaiser for them steal something whereas I entered in alone but regardless of the reason, at the very least, he should have been fair and consistent with his treatment and told me the same thing as them. As for the cashier himself, he was a white man, not Asian like me which otherwise would have made him seem even more biased although this still does not excuse his unfairness.
This kind of thing has been going on for a long time now and it isn't just Circle K telling teenagers who enter to leave their backpacks behind as almost every store does this. You never see them telling adults to leave their bags behind but they do this to teenagers because they are viewed as trouble makers whereas adults are viewed as more mature. Once again, this is judgement based on looks and appearance. Just because some teenagers shoplift doesn't mean every single teenager shoplifts and just because someone is an adult doesn't mean they won't shoplift. I can't blame them however, as they have to take precautions in order to prevent as many shoplifts as possible but I still think they need to be fair and incorporate this to everyone rather than just a specific group of people.