According to Zimbardo's definition, evil is an intentional harming of innocents while knowing it is the wrong thing to do. This requires the evildoer to accept the innocence of his victims and know what he is doing is wrong...not wrong tactically or strategically, but morally wrong. So, in answer to your question (per Zimbardo) no, if the purveyor of violence sees his deed as just and his victim as guilty- then it is not an evil deed. It may be evil to any bystander, and especially so to the victim, but if the deliverer of the deed sees it as good, then it is not evil.
If we choose a. An idea defined by God
, then we need to decide which God and where can we find the definition. If we choose the Biblical God we discover a complex relationship between God and good and evil. If we line up verses and count the times God affirms the good and rejects what is evil, we see that God has identified evil as that which impedes his plans for humanity. Still, we can find verses that describe God as the source and origin of evil. And, we can identify behavior from God that we could very easily label evil. (Unless we utilize Zimbardo's definition, in which case God's victims always deserve their fate and are not innocent.) And we find conflict in the text where God demands that humans be righteous, act justly, show mercy, offer forgiveness...as well as God demanding terrible deeds commited in his name. The term evil arises out of this complicated narrative: if we take Genesis from Revelation as a whole we see that evil starts with God, and is finished with God...and in between it serves as a volatile marker for righteous behvaior and setting boundaries against those deserving of the worst forms of wrath.