This document discusses gender discrimination and sexism. It defines sexism as prejudice based on gender that results in unequal treatment, especially of women by men. Several forms of sexism are described, including discrimination against both women and men. Discrimination against women includes viewing them as the weaker group in need of protection. Discrimination against men includes always attributing men's mistakes to incompetence. Gender stereotypes and differential respect for gender are identified as underlying causes of gender discrimination.