I'm updating this thread on dog whistling because I'm slowly beginning to understand what it is. I've found an example that may help illustrate.

Let's say Shelly has been struggling with her math grades. Right before they go to visit relatives, Mother lectures her about the C- on her report card. If she'd only try harder and put in the work, she could do so much better. Then at the visit, Mother makes it a special point to bring up how well Shelly's cousin Kelly is doing in her math class. "You got an A? How wonderful! You must have worked so hard! I'm sure your mother is proud of you." We all know this is an intentional dig at Shelly, but if Shelly utters one word....