You can't count on being fortunate enough to have your fight captured on video; but you should never assume it wasn't.
Chicago is now the most monitored city in America:
ACLU is not happy about it:
Odds are increasing that a fight will be captured on video and I have to believe that in the heat of the moment most people will totally forget about it.
Jerome Ersland was tripped up by the video in his own store. Maybe Ersland is not a good example, but you would think that someone that security concious would at least be cognizant of the video monitors in the store where he works every day.