(CNN) Madonna's new song starts a little differently than most.

Before the pop icon starts singing in her "I Rise" video, another familiar voice preludes the song.

"Us kids don't know what we're talking about, that we're too young to understand how the government works," Emma Gonzalez says at the beginning. "We call BS."

Four days after the shooting, Gonzalez delivered a fiery speech at a gun control rally in Fort Lauderdale, Florida. That's when she uttered the words Madonna chose to highlight.

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