Skull & Crossbones now Incorrect

Because the Nazis used it:

"Wal-Mart Stores Inc. is pulling a skull-and-crossbones T-shirt from its shelves after a Maryland blogger complained that the image was identical to a Nazi SS emblem from World War II.

Source

That it was a conventional symbol of piracy (much used in various entertainments) long before the Nazis came along does not matter, apparently. If the image was being used to promote Nazism, the protest might have had some point but in fact only one super-sensitive person was even aware of the similarity to Nazi iconography. But that one person was allowed to make the rules for everybody else.