Chimps and Racism

Recently a picture has been making the rounds on the internet depicting President Obama as the child of a chimpanzee couple which states "Now you know why there's no birth certificate".  I must admit I actually find a little humor in it, but only for the same reasons I find humor in similar picture that compare former President G.W. Bush to a chimpanzee.  Today I discovered that The Daily Mail ran a story a few days ago referring to the picture as "racist", and that democrats in Washington are accusing at least one Tea Part member of racism for forwarding the email.

The thing that has me puzzled is this - the people who are making a big deal about a picture that compares Obama to a chimp didn't seem to have any issue with the pictures that compared Bush to a chimp.  Somehow when you compare Bush to a chimpanzee it's an attack on his intelligence, but when you compare Obama to a chimpanzee it suddenly becomes a race issue.  How does that work?  I put Obama in the same intellectual category as Bush, so the comparison should work for either of them.

Can you say "double standard"?

Apparently this picture is racist...






...but these pictures are not racist...

If anyone can explain how this works, please let me know.