I don't have a problem with Red Light cameras but I do have a problem with speed cameras.
I have a lot bigger problem with speed cameras (mainly because speed limits are set artificially low in many places).
However, one of the big problems with red light cameras, is that intersections that use them also have conveniently tended to have their yellow light shortened (because shorter yellow=more violations=more $$. You could improve safety at a lot of these intersections more by lengthening that yellow light than by putting up a camera.