The Lusitania is sunk by the Germans, and a song immediately appears. Interestingly, at this time, the US was not involved in the war, and the reaction to the loss of the ship and people : "But all we can do is just sigh!" and "The warning they scorned, And now we must cry in despair." Pretty pathetic.
However, when the United States entered the war, the tone instantly changed, now the songs called for killing germans and Kaiser Bill personally. Remarkable example of freedom of speech and opinion of the creative intelligentsia and the media... From "I didn't rise my boy to be a soldier" to "America here's my boy!" in matter of days