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Artists of all types have found different ways to express their anger about the Flint water crisis.

On Friday night, filmmaker and Flint native Michael Moore tweeted from a hospital in New York where he's being treated for pneumonia:

"While in the ICU I've had some time to kill, so my editor Pablo Proenza & I decided to make a music video for Flint."

The six-minute video is set to "They Don't Care About Us," a Michael Jackson song.