I was hit by a cop once. I was about 17 years old, and driving to visit my dad for the weekend. I was the first in line at a 3-way intersection; I was on the main highway, with the "T" portion curving around behind a hill so that you couldn't see very far down that road. I was on the side of the highway closest to the T. Moments before the light turned green, a cop with its siren on came running through the opposite direction down the highway. Then the light turned green. I started going through the intersection. When I was at least 2/3 of the way through, I felt a crash, as a cop (also with his siren on) came running through the red light down the T-road, and slammed into my rear-passenger door. Between the other cop siren and my radio being on a moderate volume, I hadn't been able to tell there was a second cop car approaching (it turned out there was a false alarm at a local bank, so cops were coming out of the woodwork), and I couldn't see very far down the T before entering the intersection.

I was able to drive away, but there was thousands of dollars in damage, and needless to say as a 17-year-old kid who had only been licensed for less than a year, it was terrifying at the time. No one was injured, fortunately.