  Scanlon and others might argue that the unidirectional view fits better than a bidirectional one with the main reason for having a concept of discrimination, viz., to pick out systemic injustices linked to membership in a socially salient group. The discriminatory actions of dominant group members typically combine to create such injustices, while actions of subordinate group members wrongly disfavoring on the basis of prejudiced attitudes persons in the dominant group fail to combine in that way.