One of the very small privileges that I get as a white woman, is almost never having my receipt checked at stores that do that (no so much at warehouse stores, but other stores.) Would it do any good to insist on them checking it? Would that right any wrong? Would that make them aware they were being biased and unfair or would it just annoy the unfortunate worker? Are they making the judgement, or have they been told by management who to check?