As a case in point, the express checkout at a local grocery store has a 15 item limit to expedite customer flow. It’s all too typical to see blacks and Mexicans load up with 50 or more items and abuse it. We white folks (sadly including me) just accept this misbehavior and tolerate it in seething silence. Our fear of confrontation inhibits us from even vocalizing our thoughts with a simple “excuse me?”
Here in Maine, where there are 50 colored people, it’s just ignorant white people that do that. Ignorance knows no race...
I agree with your essential point. One difference is that in a largely homogeneous area, such a Maine, it's not going to create a race riot when calling someone out for misbehavior.
I saw some white teens acting up at a park where I jog (or more aptly, walk at a good pace) a few weeks ago. I had no hesitation at all in giving them a Clint Eastwood-style verbal dressing down. Had it been blacks or Mexicans, my sense of self-preservation would have kicked in and just let the relatively minor infraction go.