The kids are his daughters Violet and Harper. A little googling found this Rolling Stone article on the vid - http://www.rollingstone.com/music/features/dave-grohl-talks-directing-daughters-for-new-foo-fighters-video-w499153

*dupeof=https://videosift.com/video/Foo-Fighters-Rick-Astley-Smells-Like-Teen-Spirit

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And if they run out of hookers then they stack dead actors, stacked to the rafters line up the bastards all I want is the truth. And a perfect segue into tonight's musical guest, the Foo Fighters.

Same situation in Kansas City in 2011
http://videosift.com/video/Westboro-Baptist-Church-picket-The-Foo-Fighters

Foo Fighters Dave Grohl discussing the visit from Westboro Baptist Church and how they Rick rolled them https://youtu.be/y6DNx4022R8

One of the best concerts I've ever seen was Foo Fighters about 7 years ago. Dave's interaction with the audience is special.

*nsfw

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Foo Fighters (Dave Grohl) response
https://youtu.be/qD35ASXHmsU

Translated by some dude on reddit.

Hi Cesena, I'm David, hello!
I'm sorry, I don't speak Italian, just a little, a little
that video, how beautiful, how much beautiful!
thank you very much
we're coming to you, I promise
we'll meet soon
thank you very much, I love you, bye!

Your video, 1000 Italians Play "Learn to Fly" by Foo Fighters, has made it into the Top 15 New Videos listing. Congratulations on your achievement. For your contribution you have been awarded 1 Power Point.

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Times Like These (Foo Fighters) - Ryan Adams - Sydney Opera has been added as a related post - related requested by Zawash on that post.