You know most people would get the social clues. Most reasonable and rational people would a least try not to reinforce stereotypes about their group. They would at least try to reason. But what to you do when someone thinks that atheist are smug and arrogant? You answer them in a smug and arrogant manner.
While there may be "an eye for an eye", there is also, "If all your friends jumped off a bridge, would you do that too?"