political science

We continually hear about interest groups in the news. Understanding this, what is the relationship between interest groups and government? How does this apply to government-created interest groups?

 reference: 

Roskin, M. G., Cord, R. L., Medeiros, J. A., & Jones, W. S. (2014). Political Science: An Introduction (13 ed.). Upper Saddle River, New Jersey, US: Pearson Education.