Excerpt: "For over 40 years, Gene Sharp’s seminal work on “The Politics of Nonviolent Action” has built the theoretical basis for nonviolent action and civil resistance scholars. Two years ago, in 2015, Stellan Vinthagen published “Theory of Nonviolent Action” with the aim to “develop a conceptual framework and a new theoretical framework of what ‘nonviolence’ is” (page 3)."