You know what is a far more dangerous job than being a police officer? Being a pizza delivery guy.
I'm not being tricky and counting accidental deaths either. That is for homicide. For some reason you never hear about people in the food services industry beating the shit out of innocent civilians.
I think you're making claims that aren't supported by the data you linked to. Your data indicates:
There were 144 law enforcement worker occupational fatalities in 2008. This represents 3% of all fatalities as measured by occupation.
There were 65 food prep and serving occupational fatalities in 2008. This represents 1% of all fatalities as measured by occupation.
But these numbers alone don't really tell the story. We have no idea how many were employed in each category. When measuring whether one job is more dangerous than another, we only really care about deaths per capita, which isn't presented in this data.
The only data that appears to support your claim is that in the 4th column labeled "homicides." But the real label is "homicides (percent of total for occupation)." It indicates:
33% of law enforcement fatalities are homicides. This is approximately 48 law enforcement homicides in a single year.
54% of food prep and serving fatalities are homicides. This is approximately 35 food prep and serving homicides in a single year.
It's true that the percentage is higher for those in food service, but that only means that for those that actually DO die, chances are about 1 in 2 it will be a homicide if you're making pizza, or 1 in 3 if you're driving a squad car. Again, that data doesn't give any indication how many total people there are employed in each occupation. There's just no way to use this data to back up the claim that it's more dangerous to be a pizza delivery driver than it is a cop.