There is no absolute answer to your question, as this is ultimately dependent of the magnitude of such case and its backstory.
Harm is harm.
If you were to put a names for example:
A = Serial Killer,
B = Victims,
C = Authorities, and
D = Civilian
If a serial killer kills, were convicted of Murder as a capital felony and sentenced to death, some random individual would have no right to seek revenge against the authorities.