Affirmative action is a terrible thing. It forces universities and companies to accept people not based on any trait they value (merit, result, history, experience, personality, etc) but on an imposed arbitrary trait such as sex, skin colour, etc.
They spring from perceived statistical inequalities to propose the enforcemente of all kinds of impositions and measures of "social justice", which are nothing more than helping some at the expense of all others. So, for instance, if it is shown that blacks occupy fewer jobs of such characteristic than is their percentage in the population, companies should be forced to hire blacks as opposed to other candidates so that the statistics equalize.
This is ridiculous and unjust. Soon enough someone will prove that the percentage of top executives with no little toe on their left foot is smaller than the percentage of these men in the general population, and thus companies should favour applicants who lack their little toe.
Firms that don't make the best choices of employees are hurt in their profits; likewise, firms which make good decisions reap higher profits. The market already provides the system of reward and punishment to those managers who put their own arbitrary preferences of gender and skin colour over the company.
Every single individual is unique; no two persons are identical, though each shares many characteristics with many others. Gender, skin colour, kind of hair, eyes, head size, height, number of toes, etc, to name just some of the physical characteristics that vary among men.
To force someone to favour the posessors of this or that characteristic is absurd, immoral and harmful for society as a whole.
The best weapon against unjust prejudice of all kinds is information. With the spread of knowledge, old false opinions are discarded in favour of more reliable ones. To force companies and universities to hire and enroll contrary to their present best judgement is a great blunder.
Afterall, what if there are indeed differences between the sexes, as many studies have been showing? This is the kind of question that proponents of affirmative action want to deny at all costs, preferring imposition and coercion rather than information.