The Los Altos History Museum had an exhibit of the 100th anniversary of the armistice of World War I.
There were photographs of individuals who fought in WWI, who worked in the factories and who protested the war from the United States National Archives.
Many actors were part of the effort, across the country, to encourage adult males to enlist in the Great War.
There was a photo of a German American, from Minnesota, who was tarred and feathered for not supporting the war effort. Tarring and feathering was commonplace in colonial times so it was indeed interesting to see that it had been done in the 20th Century in America.