The most popular video on YouTube has no lip-synching Chinese teenagers, no babies falling over, no drunk cats: It's Barack Obama's speech on race.
So far, the Obama speech has been clicked on 1.6 million times --though it's not possible to tell whether viewers watched all 37 minutes.
There are also more than 4,000 comments, ranging from "Awesome," to "No, we can't," to "Bar-rack to the Future!!"
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