It is so strange to say that identity should take a back seat to humanism when every historical example of discrimination and dehumanization is based on identity. Identity in those instances is not imposed on oneself, but is used to define the outgroup that is being dehumanized. Identity politics is simply an honest accounting of groups that being descriminated against. When the discrimination ends, we see the group identity evaporate. We need only look at the early 20th century definitions of Caucasian, and the identity politics of Irish and Italian Americans subsequently evaporating when that definition evolved to include all Americans of European decent, to see that identity politics is a reaction to injustice and not the other way around.