Law enforcement officials might consider consulting with private industry as well as the scientific community (e.g., MIT, Cal Tech, and other engineering institutions) and ask them to create protection for the heads of officers. Given evolving technology and chemical compositions, I'm sure that some user-friendly ballistic head gear is not only viable, but at least for some cops—given the areas they're working in—necessary.
True, even if some company developed excellent head protection for patrol officers, some officers would abstain from wearing it, just as some cops refuse to this day to wear ballistic vests. But shouldn't they at least be able to make that decision on their own, as opposed to having their heads relegated to target duty in the meantime?
Before our streets increasingly come to resemble outtakes from "The Departed," it's time for administrators to wrap their minds around something that can wrap around the minds of their officers.
Of course, the resulting design of such helmets may end up looking intimidating. But personally, I think an intimidating helmet might be just what we need. Maybe it'll cause some trigger-happy bastard to think twice before taking a shot at a cop.
Unfortunately, the same bureaucrats that would install rainbow stickers in patrol car windows and offer up pastel colors on their frames would probably shoot down the idea because it makes the cops look too much like the military. Of course, these folks would not even consider the threat that cops face from head shots before they reject the helmets. You see, they've never worked patrol.