Try searching in the library catalog for books about social movements. Start broadly with terms like:
social justice movements
social movements history
Or try specific movements like:
Black Lives Matter
Use a scoped Google search to limit your results to .org/.gov/.edu websites.
For example, to find information about environmental justice organizations, enter this in a Google search box:
environmental justice site:org
To find governmental websites with information about environmental justice, try searching:
environmental justice site:gov
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