Which sociological paradigm sees the social world as an outcome of competition between groups for resources?

The social conflict theory of sociology views the social world as a result of competition for limited resources by different groups within a society.  This school of sociology attempts to understand what groups benefit from the established social systems and how the most powerful exploit the weaker ones. Sociologists can look at this based on race, gender, age, ethnicity or any subset of society.  Karl Marx is a famous social conflict theorist.  Marxism is a very well known theory that examines the exploitation of the lower class workers by the wealthy capitalists.  While Marxism examines the interaction of classes, W.E.B. Dubois famously utilized social conflict theory to explore the competition for resources between racial classes in the United States, and how the white Americans exploit African-Americans through segregation.