Organizations play an important role in social movements. Various sources provide information on organizations, including news sources, tax and financial records, reference works, as well as books and articles.
Most organizations will have websites with the following items to look for:
This information will allow you to compare organizations according to the resources they have available.
Encyclopedias and historical dictionaries can give overviews of the scope of a movement. Some are available online; some are in print in the Bates Reference section.
The following are book series on controversial social issues: