Use class articles to talk about how race, gender, and class have been defined by others and how have other tried to change those definitions and what have been the consequences. 
1.  Patricia Hill Collins, Black Feminist Thought in the Matrix of Domination  From Patricia Hill Collins, Black Feminist Thought: Knowledge, Consciousness, and the Politics of Empowerment (Boston: Unwin Hyman, 1990), pp. 221“ 238 
2.  Journal of Scholarship of Teaching and Learning, Vol. 6, No. 1, August 2006, pp. 14 “ 38. Students Race and Participation in Sociology Classroom Discussion: A Preliminary Investigation