If it's an arbitrary point how could it be anything but subjective? You're saying _some_ actions are universally evil. Personally I disagree that such actions exist.

The world is a complex place and humans are complex beings. Nobody considers themselves the bad guy in their own story, that is, unless they feel they've been labeled the bad guy and they act to fulfill that label.

Painting people and actions as inherently evil, to me, is to overly simplify the person or misunderstand their motive and it prevents us from learning from their misdoings.