What do the facial expressions and body language tell you about power relationships (equal, subordinate, in charge) and attitudes (self-confident, vulnerable, anxious, subservient, angry, aggressive,...

What do the facial expressions and body language tell you about power relationships (equal, subordinate, in charge) and attitudes (self-confident, vulnerable, anxious, subservient, angry, aggressive, sad)?

If people are depicted, how would you describe their age, gender, subculture, ethnicity, profession, and socioeconomic class? How stereotypical or surprising are the people?