I wouldn't be surprised if this was either a person who works for tips and/or tends to carry a lot of cash for other reasons. For example, I've heard many pizza-delivery people who may (or may not) be illegal aliens have a distrust of banks (i.e. reportable income).

So from what I understand, both of these types of people are more likely targets of robbers. That is, a person dressed in all black (for example) might be assumed to be a waiter/waitress who just got off from work & so is likely to be carrying cash tips. Someone who looks to be of hispanic descent & perhaps dressed a certain way could be taken for a delivery person who might also be carrying a large quantity of cash. (However I've also heard that someone like this might not even report such a crime. Again, for example illegal aliens who might distrust authority.)