The recent treatment of two black customers by a Starbucks manager in Philadelphia and their resulting arrest was disgraceful.

Exactly what transpired between the two men and the manager who asked them to leave and then called police last Thursday is unclear.

But the outcome is clear: Two black customers were treated in a way markedly different from what most people experience with the Seattle-based coffee giant.

Its stores are intentionally designed as public gathering spaces, and most visitors take advantage of them, and the restrooms, without incident.

This is yet another difficult reminder that more progress is needed to recognize and overcome biases, conscious or not, that continue to result in people being treated differently because of their race, gender and appearance.

Starbucks is relatively enlightened in this regard, as demonstrated by its longstanding corporate focus on social responsibility and inclusion. The company is making great strides in addressing pay inequity and has long used its stores to create opportunity in disadvantaged areas.

It’s commendable that Starbucks CEO Kevin Johnson promptly apologized, took personal responsibility and met with the men.

But this can’t just start and stop with Starbucks.