No. Unless you are a serial killer or mass murderer, most people kill for a specific reason....you pissed them off, you stole something, you took their girl....etc. These are the reasons, albeit some of them dumb reasons, that people have been killed. Anyone who would kill a cop will kill anyone for no reason at all. That is my take.
This cop has been charged with murder and rightfully so. Should he get the death penalty? Only if it falls under the parameters of capital murder. He will probably spend the rest of his life in prison. If he is executed, I have no problem with that.