Spike Lee, an avowed Bernie Sanders supporter, has made his endorsement of the Vermont senator’s presidential campaign even more official than it already was with a new ad starring Harry Belafonte, Susan Sarandon, Rosario Dawson, Alan Cumming and others. The five-minute piece comes a few days ahead of Tuesday’s primary in New York, which is among the most significant contests remaining in the ongoing race between Sanders and Hillary Clinton. (Clinton, who served as Senator of New York from 2001 to 2009, is expected to win; Sanders is originally from Brooklyn.)

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Titled “Wake Up,” the video begins with Lee shouting “wake up!” as supporters steam into a rally. It’s his only onscreen appearance until the end, with everything in between cutting between footage of Sanders speaking at different rallies and his high-profile supporters addressing the camera with others behind them. Also feeling the bern are Erica Garner, Tessa Thompson, Gaby Hoffman and Cornel West.

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Lee has long been as politically active as he is aesthetically bold. His recent “Chi-Raq” tackled the gun-violence epidemic in Chicago via a contemporary take on Aristophanes’ “Lysistrata.”

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