[eyeamok]

Article and links are pretty thin on facts.

What exactly does Treated badly mean?

Did the customer exchange words with the cashier?

what words were spoken and by whom??

Sounds more like an uppity POS with a chip on her shoulder out looking for trouble, otherwise EVERYTHING the Cashier Said or Did would be front and center.

[Major Matt Mason]

The odds are that this was a perceived slight as opposed to an actual slight by the cashier. As you say, someone that is wearing BLM merch will be hyper-sensitive, or simply flat-out lie about being treated poorly.

[Hulka]

You got to know the employee used the n-word. That is a standard charge.