@Blackbird : I am black. Isn't that interesting how one person believes it is not and handles the situation as not feeling as though a person's reaction is racially motivated with no issues and another may feel it's racially motivated, reacts, "sustains loss", and now has a law suit? Whether the situation is racially motivated or not doesn't the reaction escalate the situation negatively?
Do we really believe we are able to "change" a racist? Or is it best to give respect and expect respect? Why do we spend so much time assuming the reason another person is being treated a certain way differently from the way we are treated opposed to ensuring we handle situations as reasonable as possible. I know there aren't signs posted at the store yet I've been a patron several years and have observed the practice and I prefer to limit my time in the store as much as possible and have my receipt in my hand after I leave the check-out area, every visit.
I tend to never assume a person's behavior/actions are intentionally negative or racially motivated unless specific words are voiced and I've carefully evaluated my actions to ensure I've handled the situation in the most reasonable way as possible. I understand some blatant situations are unavoidable but it is more important to evaluate yourself and know that you have consciously attempted to prevent and now must respond to a situation in a calm manner and present your "evidence" at the appropriate time which justifies your actions if need, while always being mindful not to attempt to justify your actions based on another person's experience.