Why Does One Draw Gasps & The Other Laughs?

Is there a difference between this: "I have a telegram from the White House. They're going to have to change the name of that building if Obama's elected."

And this:

The Black White Supremacist by Dave Chappelle

***Warning: the video contains language and subject matter that is offensive***

Some questions:
-What is the difference between the two?
-Which one is more appalling?
-What makes one "funny" and the other "inappropriate" in society's eyes?
-Does this appear to be a double standard?