With state assemblies in such battleground states as Wisconsin and Michigan passing legislation that changes the status quo for unions, discuss how these events play into the disturbance theory of the political scientist David Truman

Does this theory rely on grassroots mobilization or some other level? Or is some other factor, such as leadership or government involvement, a more important factor than a "disturbance"? Base your answer on your knowledge of current events.

What will be an ideal response?

An ideal response will:
1, Identify the source of the disturbance or threat to individual interest that results in political action.
2, Assess whether more new interest groups have been created in response to the threat or disturbance (examples can be the Occupy Wall Street groups that joined the SEIU and UAW) or if existing ones simply reacted and there is none of the complexity, divisions, and new organizations.
3, Identify the nature of the leadership, whether conservative, governmental, radical, as well as local or national in nature and the part it plays in making the interest group effective or ineffective.