The trainer at my Beginning Leader Training class was telling us about her daughter filling out an application to travel with the Girl Scouts (or some sort of app). It asked her if she knew people of other ethnicities and how she dealt with them. She couldn't think of any, she said she didn't know any at all. Then her mom (the trainer here) started listing friends that were Indian, Asian, etc. The girl had never really realized that these other kids were different, though they had different cultural backgrounds.