On a rainy day in June of 2007, President Obama found himself speaking to a subdued crowd in the tiny town of Greenwood, SC. He was exhausted, soaking wet, and beginning to doubt the whole campaign when a voice called out from the back, "Fired up, ready to go!". The chant, started by one unassuming woman in a church hat, transformed the audience and went on to become a rallying cry in every corner of America.