"LEAVE BARACK ALONE!"

John McCain’s latest campaign ad, “Celeb,” is stirring quite a bit of controversy—especially in its apparent comparison of Barack Obama with Paris Hilton and Britney Spears.

The folks at Slate, recognizing an opportunity for parody when they see one, just posted this video, a re-dubbed version of Chris Crocker’s already legendary “Leave Britney Alone" video. The result: one of the most passionate (and hilarious) defenses of Obama we've seen on YouTube.