Gender roles

 Gender roles are the social and behavioral norms that are generally considered appropriate for either a man or a woman in a social or interpersonal relationship. There are differences of opinion as to which observed differences in behavior and personality between genders are entirely due to innate personality of the person and which are due to cultural or social factors, and are therefore the product of socialization, or to what extent gender differences are due to biological and physiological differences.
 Gender roles differ according to cultural-historical context, and while most cultures express two genders, some express more. Other societies have been claimed to have more than five genders, and some non-Western societies have three genders – man, woman and third gender. Gender expression refers to the external manifestation of one's gender identity, through masculine, feminine, or gender-variant or gender neutral behavior, clothing, hairstyles, or body characteristics.

I think gender roles acknowledge social discrimination and stereotype. and third gender was strange to me. But now, I needed to acknowledge third gender.

How can we change our perception of third gender such as lesbian, gay.