that's partly why i included the point about good atheists
what, are they christians in the closet?
Sorry, I was being facetious.
People can be good or bad (humanly speaking) with or without the influence of a religion. And they can change over time, to be better or worse (humanly speaking) with or without the direct influence of religion.
Under Reformed doctrine (meaning most Christians think this is wrong, but personally I believe it to be a more accurate and consistent representation of the Bible's teaching) people are unable to do anything that is truly good (spiritually speaking), even if it is fantastically so by human standards, because their intentions are not pure (i.e. doing it for the glory of God alone).
Once the Holy Spirit works in one's heart (sounds cheesy but I can't think of a better way to put it), a believer becomes
able to do good things with pure intentions, but not necessarily likely, varying from person to person. Obviously they still commit sin, but there's a little bit of good sprinkled in here and there.
Basically, "good" atheists can do good things from a human perspective, but not good in a Christian context, because that would mean doing it for God, and not for yourself or some other person. We really need to stop using the word good for that. Pure would be better, I think.
I cannot and will not defend people who claim to be Christian, but use the religion to justify things that are flagrantly hateful or selfish. Their actions are effectively blasphemy, and cause no small amount of harm to everyone around them.