Amid the emotional outpouring and rational protesting of grand jury decisions to not indict the police officers who killed Eric Garner and Michael Brown, Alicia Keys's voice emerges with a call to prayer.

"Violence everywhere, barely holding on/ What the hell going on? Do you know who you are?/ Do you know who we are?" Keys questions in her new song, "We Gotta Pray," over a reworking of Soul II Soul's "Back to Life" (surely she handled the piano herself).

The accompanying video is equally as urgent, a collection of photos from the Ferguson protests, the March on Washington, Martin Luther King Jr., Mahatma Gandhi and other examples of peaceful rebellion against an inhumane status quo.

"We, we're extraordinary people/ Living an ordinary life," she answers elsewhere in the lyrics.

Keys posted the musical response to her Twitter page Wednesday (Dec. 3) night, hours after the announcement that NYPD officer Daniel Pantaleo will not be charged for the fatal chokehold he administered on Eric Garner, and a little over a week after the announcement to not charge Darren Wilson for the fatal shooting of Michael Brown.

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(Photo: Kevin Winter/Getty Images for CBS Radio Inc.)