Oh my goodness, yes, and I have almost been hit like 3 times by an officer doing this in my home town.
I had witnessed it several times sitting at red lights (thank goodness I do not live there anymore) but to be honest, I have had to wonder often if the cop was just busy doing something in his/her car, set for cruise, and forgot to stop?
As mentioned, I have also been in the right of way of a green light (3 times) on my way home from work (always within this same 1 mile radius) and at these red lights in one of the busiest parts of the city, officers would turn their lights on as they are going through the light, not a second before or warning they are doing so. Usually when they did it, they were speeding to the point you wouldn't notice they were there until they are right in front of you or seconds away from hitting you.
I am not sure what to think about these situations, but I sure wish someone could justify because it has imposed serious thoughts in my mind regarding job negligence/abuse.