Hillary Clinton Hillary Diane Rodham ClintonJeff Flake: Republicans 'should hold the same position' on SCOTUS vacancy as 2016 Momentum growing among Republicans for Supreme Court vote before Election Day Warning signs flash for Lindsey Graham in South Carolina MORE is defending NFL players who kneel during the national anthem, saying they’re not protesting the anthem or the flag.

Clinton said in London on Sunday that President Trump’s attacks against the players is an example of the “very clear dog-whistles” to his base, Fox News reported.

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“Actually, kneeling is a reverent position,” Clinton said. “It was to demonstrate in a peaceful way against racism and injustice in our criminal system.”

She added that the protests are “not against our anthem or our flag.”

NFL free agent Colin Kaepernick began kneeling during the national anthem last season to protest racial injustice. He filed a grievance against the NFL Sunday, claiming owners had colluded together to stop him from playing in the league.

Trump began attacking NFL players who kneel during the anthem last month, referring to them as “sons of bitches” and calling for team owners to fire any players who take part in the demonstrations.

Trump also said fans should walk out of games when players kneel. Vice President Mike Pence Michael (Mike) Richard PenceMomentum growing among Republicans for Supreme Court vote before Election Day Sunday shows preview: Justice Ginsburg dies, sparking partisan battle over vacancy before election McConnell urges GOP senators to 'keep your powder dry' on Supreme Court vacancy MORE walked out of a Indianapolis Colts game earlier this month after several San Francisco 49ers players knelt during the anthem.

Clinton also called on Democrats to push back against Trump, calling it a “grave error” for the party to back away from battles with his administration.