The Obama/Joker posters have drawn criticism from Obama supporters, as mean spirited and/or racist.

How is the Joker depiction racist? Unless one mistakes the Joker makeup to be a photo negative version of blackface, the racism claim is just a disingenuous argument that any critique of Obama is inherently racist.

As to the mean spirited part. It is mocking the president, but not anything all that bad. It's not like the real hotheads who make up posters depicting or encouraging a political figure's assassination, or some other act of violence (of which, sadly, there have been too many of).

Instapundit has rounded up a few links to articles about these criticisms.

My favorite is Jim Treacher's funny rewriting of Batman's interrogation of the Joker. I can see the Joker trying that.