Come to think of it, am I the only one who has a difficult time understanding why killing a cop is considered so uniquely transgressive and supremely evil?
Cops are supposed to accept danger. They put their lives on the line so the rest of us don't have to; it's what they do. One would expect them to encounter mortal peril more frequently than the general population.
Because in theory they stand in place of us, taking on the risks of society at large and thus when someone kills a cop they are striking at the larger community.