You might look at the social psychological literature on prejudice and stereotypes, add those to your search terms.

An example of the mind-body problem. One cannot look into people's minds, therefore you rely too heavily perhaps on their behaviors.

Dennis

Dennis Mazur

To some extent, and in extreme instances, appearance can point to beliefs and attitudes, therefore the point of uniforms and shared look and behaviour-it proclaims loyalties and association. Shared tastes in music and often the behaviour this may encourage, shared sexuality, nationalism, attitudes to violence.