Final answer:
Conflict is good for society because it exposes social inequalities and power differences. The civil rights movement in the United States is an example of conflict leading to significant social change.
Step-by-step explanation:
Lewis A. Coser, a sociologist, argues that conflict is good for society because it helps to expose and address social inequalities and power differences. He believes that conflict serves as a catalyst for social change and serves as a means for disadvantaged groups to challenge the status quo and achieve a more equitable society. A real-life example that supports Coser's theory is the civil rights movement in the United States. The conflict between African Americans and the white majority led to significant social and legislative changes, including the end of racial segregation and the protection of civil rights for all citizens.