Let me illustrate the difference between hatred (good) and vera (bad) using a simple example. If X initiated violence against Y and Y decides to retaliate, but before being able to do so X is already killed by Z, if X felt hatred towards Y, X will be grateful towards Z (because Z gave X what X deserved), but if X felt vera towards Y, X will redirect the vera towards Z (because Z denied Y the chance for victory over X*).
(* This is a frequent wuxia trope.)