one-fingered peace sign
n.— «We’ve had a few negative responses. Sometimes we get what I call the “one-fingered peace sign” and once a woman pulled over and yelled at us for not supporting the troops.…I’d rather support them by bringing them home.» —“On Saturdays, Kendal Calls for Peace” by Alice Ollstein in Oberlin College Oberlin Review Sept. 22, 2006. (source: Double-Tongued Dictionary)