B.D. Tatum, "Who am I? The Complexities of Identity"

Erik Erikson, Psychoanalytic theorist writes,
"We deal with a process "located" in the core of the individual and yet also in the core of his communal culture..."

This "gifted" dimension of my identity was regularly commented upon by teachers and classmates alike and quickly became part of my self-definition.

People are commonly defined as other on the basis of race or ethnicity, gender, religion, sexual orientation, socioeconomic status, age, and physical or mentaly ability.

Dominant groups, by definition, set the parameters within which the subordinate operate. The dominant group holds the power and authority in society relative to the subordinates and determines how the power and authority may be acceptably used.

When a subordinate demonstrates positive qualities believed to be more characteristic of dominants, the individual is defined by dominants as anomaly.

Question:
1. Why is people definition must included sexual orientation? In some culture its taboo and even in many religion its already define that sexual orientation is heterosexual.