A video provided to the Vallejo Sun shows a truck driver “rolling coal” at anti-Trump protesters in Vallejo last month. The resident who provided the video said the driver, who had no front license plate, drove up and down the street targeting the protest. Rolling coal is the act of intentionally tampering with a vehicle to emit large plumes of diesel smoke, often for the purpose of blasting pedestrians and bicyclists. #vallejo #protest #trumpprotest | The Vallejo Sun

WTF Is Rolling Coal?

Political Protest Or Just Blowing Smoke? Anti-Environmentalists Are Now 'Rolling Coal'