Madonna made a surprise appearance at the Women's March on Washington Saturday, speaking at the pre-march rally and telling those who are critical of the march "f--k you."

"Let’s march together through this darkness and with each step know that we are not afraid, that we are not alone, that we will not back down, that there is power in our unity and that no opposing force stands a chance in the face of true solidarity," Madonna said.

"And to our detractors that insist that this march will never add up to anything, f--k you. F--k you."

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"It is the beginning of much-needed change, change that will require sacrifice," she added.

The pop-star has been an outspoken critic of President TrumpDonald John TrumpHarris bashes Kavanaugh's 'sham' nomination process, calls for his impeachment after sexual misconduct allegation Celebrating 'Hispanic Heritage Month' in the Age of Trump Let's not play Charlie Brown to Iran's Lucy MORE, saying on his inauguration day that the U.S. had gone "as low as it could go." Madonna endorsed Democratic presidential nominee Hillary ClintonHillary Diane Rodham ClintonDershowitz: 'Too many politicians are being subject to criminal prosecution' The 13 Republicans needed to pass gun-control legislation Democrats spar over electoral appeal of 'Medicare for All' MORE on the campaign trial.

“Yes, I’m angry. Yes I am outraged. Yes, I have thought an awful lot about blowing up the White House. But I know this won’t change anything. We cannot fall into despair.”

She then performed a set of songs, including “Express Yourself” and “Human Nature,” which she dedicated to “DT” — Donald Trump.