I rather think that would depend upon how long a gaol sentence he would get, and whether they keep rolling on the extension. I doubt that people will just go out and start a riot. They would start off with the "Free The Boris" placard etc protest marches, but they would degenerate into riots. Beliefs and opinions you disagree with are not necessarily lies. The £350 million/week has already been discussed incessantly in public for three years.