Can evil exist in the presence of a committed good?

I think, in haste, I gave a misleading answer to this question
The point I was trying to make is that the good has no objective antithesis. There is no reason to oppose the good. There is no negative consequence to ignoring the good.
On the other hand, if the good does not actively confront evil, there is a distinct negative consequence.
I am trying to make up for my laziness. Thus this question.