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*POLITICAL POLARIZATION:
  Danger & Opportunity for Change

George Lakey (84) explains that contrary to common perception, polarization is “the forge that softens the metal,” necessary to win major change, as in Scandinavia and the US in the 1930s and 1960s:

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See George Lakey‘s books How We Win and Viking Economics (including the political science reference), and many other best articles at WagingNonviolence.org including his: