The problem with red-light cameras is that enforcement becomes robotic. Robots are perfect—they don’t make mistakes (at least in theory), and they don’t show leniency. If policing is done by robots, then humans are expected to be infallible.
I live in a city where red light running is an epidemic. Drivers flagrantly just don't stop, and it kills people all the time. Red light cameras - plus actually revoking drivers licenses, and then actually throwing people in jail for driving on suspended licenses - are the only way to fix this.
It's far past time that drivers are no longer immune to consequences for violent, sociopathic behavior.