Where I am (Sydney Australia) we have fixed speed cameras that automatically create speeding fines to drivers going too fast (well, technically the registered owner of the vehicle via ANPR).

They eventually had to equip pretty much every speed camera with a speed camera camera, usually on a much higher pole to make vandalism more difficult.

When Flock helps you lay out camera placements they make sure camera pairs are facing each other.

If you want to hit the lens with the paintball gun, wouldn't you need to be in its field of vision?