They miscalculated, Jack. They assumed they were putting that image in front of only their usual audience...a group of intellectual and liberal people who think the same way they do....but instead they inadvertently put that image out in front of the entire society, most of whom do NOT think the same way as some clever liberal intellectuals who habitually read the New Yorker. They blew it.

They unintentionally handed the right wing something it would be delighted to have planted in all those impressionable minds out there.