And to play "devil's" advocate, many atheists won't make the logical argument for good and bad (evil), as in "do the right thing". Ironically, there is a logical, secular, humanist rationale to do good and believe that right and wrong exist. It has nothing to do with any mythical deity. Yet a segment of atheists don't make the case. They have a similar academic laziness that say, fundamentalist Christians do (with their myth fiction nonsense) have.
So, atheists, how do you counter the (false) accusation that atheists can do anything they want because morals are irrelevant? (I'm not an atheist. My philosophy-not-religion with the Army was, and with the hospitals is, "Bedonkohe". I am basically a secular humanist.)