Even this chart ended up having an 'interesting area' where the yellow and blue overlap, which is not easy to explain. Things that parody would often fall into this category, which can be a grey area. A few references we won't even weigh in on- an example being Seinfeld's 'Soup Nazi'. It is not glamorous, it is based on a real person while some find it amusing and others find it de-sensitizes people to the issue.
Symbols are sometimes misused when used outside of the cultures they came from, and when they are people often get offended. As the World continues to get smaller, we all benefit from learning more about each others' values and sensitivities.