Socio-political forces such as global government leadership

Socio-political forces such as global government leadership, industry or special interest groups, or environmental movements are often the positive force that is required for improved global environmental change. Think through some of the socio-political forces that you perceive have affected both global and domestic pollution control over the past four decades. Give an example of just one. How has this socio-political force positively impacted pollution control in your own community? How could it have done a better job?