As a black woman I feel the same way. Smiling is required. When I was a bartender, during college, I was required to smile and those who did not want to were called “difficult, moody, strange, unlikeable”. Those black women had less days on their schedule and were told no to any simple request for time off or assistance. Too often we are asked to smile to disarm people who think of us as a threat inherently. They practically pander for submission.