Is there evidence that the notion of "social justice" is actually an excuse for ineptitude, incompetence, and vice?

http://www.huffingtonpost.com/2012/04/04/girl-lied-about-father-rape_n_1402468.html?ref=crime&icid=maing-grid7%7Cmaing10%7Cdl1%7Csec1_lnk3%26pLid%3D149339
The legal basis for the post modern notion of social justice is that certain groups (women, blacks, gays etc) can not exert their political power adequately to pursue their interests, so they must be given “special” consideration when they have gripes about the social milieu into which they have been cast. Among these special considerations is the assumption that a woman’s accusation of rape is prima facie evidence of the fact. Of course, anybody can make any accusation, so that notion is bullshit. Is this case evidence of the “New Justice” fallacy?