Social chauvinism is a political term for the flow of fanatical patriotism by mostly moderate-left parties. During the Second World War many left-wing parties, even communist, took a social-chauvinistic viewpoint. The socialists thus rejected their antimilitarism and belief in an international unification of workers in favor of the "defense of their homeland". That happened during the French-German War.
After the October Revolution of 1917, Russia drew back from World War One, but after the death of Lenin and after the power of Stalin, the new dictator began to re-establish social chauvinism to attack the Nazis and the Japanese during World War II.
British author George Orwell sounded in his book 1984 a ambiguous and social-chauvinistic saying: War is Peace. This meant that as long as there is war abroad, there is peace inland.
Two foreign communists Rosa Luxemburg and Karl Liebknecht remained in principle during the First World War. They believed that there was only one necessary case of violence: the overthrow of the German empire for a German labor state. They argued that workers do not win with a foreign war, only losses. They lose the unification of all workers in the world to create a communist world. Their cry said, "No other fight than class struggle!"
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