Sociology is the scientific study of society, including patterns of social relationships, social interaction, and culture. It is a social science that uses various methods of empirical investigation and critical analysis to develop a body of knowledge about social order, acceptance, and change.
Democratic socialists believe that both the economy and society should be organized democratically to meet public needs, not to make profits for a few.
http://www.dsausa.org/what_is_democratic_socialism