Susan McGreevy-Nichols & Helene Scheff (2000) Teaching Cultural Diversity through Dance, Journal of Physical Education, Recreation & Dance, 71:6, 41-43, DOI: 10.1080/07303084.2000.10605161
What makes some people live in fear? Why is there so much hatred in the world? Why don't people with differing backgrounds get along? These questions may not be simple, but one age-old answer is that people don't trust that which is different from their own norms. They won't embrace what they don't understand, and their relationships with others are often based on differences instead of common threads.