Crazy classroom identity politics

From Robert Whitcomb's "Digital Diary,'' in

One of the worst things about some corners of “liberalism’’ and “progressivism’’ is that too many of their denizens tend not to look at individuals as, well, individuals but solely as representatives of groups. This leads to runaway identity politics.

Consider the University of Pennsylvania’s Stephanie McKellop, who unfortunately is a teaching assistant for the class "Sinners, Sex and Slaves: Race and Sex In Early America.’’ She has announced: "I will always call on my black women students first. Other POC {people of color} get second tier priority. WW {white women} come next. And, if I have to, white men." 

Why is she teaching at that Ivy League school? Stories like this help enlarge the white-bigot community. One fine  traditionally conservative (?) idea, in my view, is to treat each person as a complicated individual and not as symbol or stand-in for some huge population