On the night of April 18, 1775, hundreds of British troops marched from Boston to nearby Concord in order to seize an arms cache. Paul Revere and other riders sounded the alarm, and colonial militiamen began mobilizing to intercept the Redcoat column.
According to cherry, Greasers are POOR, and Socs are RICH
Your answer would be the last one: Appeal to emotions by varying the tone and pitch of their voices.
I think the answer is here