Here's Green Day's first music video from 21st Century Breakdown, "Know Your Enemy", directed by Matthew Cullen.

Click here to play on MTV.com

And the video's simplicity carries over to the album. After all, as the first single of a huge album, this thing could've been a special-effects enhanced, green-screen infused trainwreck. But instead, it's powerful and straightforward: Here's Green Day. They rock. Watch them do so. When the band is this good and the music so fist-pumpingly raucous, there's really nothing else you need to say.
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