So, do you believe all business should be compelled to serve “customers” wearing ski-masks, goalie masks, Halloween masks, and any other face coverings?
Nope, didn't say that. I was just pointing out that, in this instance, it's pretty unlikely that this woman intended to commit a crime, and that your rationale (that she may have pulled out a gun after paying) was just as possible after the cashier refused service as it would have been had the cashier accepted the money and turned on the pump.