VC Sociology Perspectives of Oppressed Groups Discussion

I’m stuck on a Sociology question and need an explanation.

• Focusing on Du Bois, discuss the reasons why perspectives of oppressed groups are able to give the kinds of critical insights necessary for social change. 

Book is :

Allan, Kenneth. (2014). The Social Lens: An Invitation to Social and Sociological Theory. Thousand Oaks: Sage Publications.

Chapter 7: The Challenges of Gender and Race

Charlotte Perkins Gilman and W.E.B Du Bois