I find it hard to understand why people would oppose red-light cameras. In separate accidents, my wife and I were hit by large trucks that ran red lights. Had it not been for witnesses, it probably could not have been proven who ran the lights.
One of our vehicles was totaled out, and I required emergency room treatment for my injuries. Our other vehicle had several thousands dollars of damage, but fortunately my wife was not injured. If it had not been for air bags and seat belts, who knows what our injuries would have been?
If cameras are reducing the number of accidents, then they must be a good thing. If someone thinks they wrongfully received a ticket based on a camera, then they can challenge the ticket in court.
If you have never been T-boned in an intersection, or have never looked in a vehicle where a person was killed (I have) by a red-light runner, you might not appreciate the benefit of the cameras. In my view it would be good to have cameras at all controlled (traffic light and stop sign) intersections because they apparently do cause people to think twice about running the light or the stop sign.
In order to avoid more carnage on our streets, we need whatever traffic control devices we can have that will reduce accidents. This is not about the camera companies or the government agencies making money. This is about saving lives.