The aim of this paper is to extend Miranda Fricker’s conception of testimonial injustice to what I call “argumentative injustice”: those cases where an arguer’s social identity brings listeners to place too little or too much credibility in an argument. My recommendation is to put in place a type of indirect “affirmative action” plan for argument evaluation. I also situate my proposal in Johnson (2000)’s framework of argumentation as an exercise in manifest rationality