[Ghoulish Delight]

It rather objectively reads as, "Religion makes bad people."

It's a message that I don't find constructive to gaining acceptance of atheism. As someone else alluded to, I'm more in line with the message of the group that started the "Be good for goodness' sake" billboard/bus ad campaign. It's a positive "we're good people" message, not a petty, "you're bad people". The sign was clearly the latter.

And your "sustained by facts" defense of it falls apart in the face of the fact that "hardens our hearts and enslaves our minds" is far from a factual, objectively provable statement. It's as much an appeal to emotion as any religious rhetoric and it turns what might have been a good opportunity to make a civil public statement into, "Nyah, nyah, we can take pot shots at you religious folk and there's nothing you can do about it!"

And would a message that said, "Non white people cause problems in this country" pass your "generality" test for being an acceptably non-inflamatory statement that really shouldn't be taken personally by anyone since no one was specifically called out?