Copperhead est un film indépendant canadien/américain sorti en 2013. Il a été réalisé par Ron Maxwell.
In a rural community upstate New York in 1862, farmer Abner Beech is a Northern antiwar Democrat. While his neighbors take up the Union cause in the ongoing American Civil War, Beech believes that coercion in resisting the secession of the southern states is unconstitutional, and gradually becomes more and more harassed for his views, derisively called a "Copperhead". His son, Thomas Jefferson Beech, enlists in the Union Army. Beech also arouses the ire of militant abolitionist Jee Hagadorn, whose daughter Esther (Lucy Boynton) loves Jeff.