We look back at protests from the civil rights era — both nonviolent and violent — to understand how these actions lead to changes in public policy. This history gives us ideas about how the media coverage and public opinion polls of today could be early signs that public policy change will follow. Featuring longtime San Francisco resident Darrell Rogers and Omar Wasow, an assistant professor of politics at Princeton University.

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Reported and produced by Katrina Schwartz, Asal Ehsanipour and Olivia Allen-Price. Engineering by Rob Speight and Katie McMurran. Additional support from Nicole Barton, Erika Aguilar, Jessica Placzek, Kyana Moghadam, Paul Lancour, Suzie Racho, Carly Severn, Bianca Hernandez, Ethan Lindsey and Vinnee Tong.

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