It depends on the type of murder and the state.
The 16 year old US citizen killed by drone in Yemen:
Human rights groups questioned why al-Awlaki was killed by the U.S. in a country with which the United States was not at war. Jameel Jaffer, deputy legal director of the American Civil Liberties Union, stated “If the government is going to be firing Predator missiles at American citizens, surely the American public has a right to know who’s being targeted, and why.”