In the book the Capacity Contract, author Stacy Clifford Simplican outlines two basic “political communities” in political communities today. The Community of Strength and the Community of Vulnerability. The Community of Strength is the political community in which membership is defined by what someone can do, or their physical capacity. The Community of Vulnerability is the political community in which membership is open to those who feel vulnerable in society, and seeks to form a community of solidarity to address the source of that vulnerability. The Community of Strength is typical of the liberal political circuits and anything to the right, and is exemplified in the way the news media approaches such subjects as immigrants and how much in tax dollars they can produce or how much tax money will need to be spent, or the skills they have. The Community of Vulnerability is emphasized on the left and is emphasized in such things as civil rights movements, or early-age Trade Unions (before they become so big they become in someways a Community of Strength, emphasizing the skills and capacity of its members).
 
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Pete Seeger is also relevant