Hillary Clinton defended NFL players who kneel during the national anthem – saying President Trump’s attacks against them exemplify his “very clear dog whistles” to his base,” according to a report.

The former Democratic presidential candidate, who was in London to promote her book “What Happened,” urged Democrats to use the issue against Trump, Fox News reported.

“That’s what black athletes kneeling was all about,” she said in response to a question about ways to resist the White House. ”That’s not against our anthem or our flag.”

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

Clinton urged the Democratic Party to continue to “resist” the president.

“I think it would be a grave error for Democrats to recede from those fights, so therefore we have to stand up, fight back, resist,” she said at the Southbank Centre’s London Literature Festival.

Clinton also compared the alleged Russian interference in the 2016 presidential elections to the 9/11 terrorist attack.

“We have really well-respected security and intelligence veterans saying this was a kind of cyber 9/11 in the sense that it was a direct attack to American institutions,” she said. “That may sound dramatic but we know they tried to recruit into election systems, not just social media propaganda.”

On Monday, Trump suggested he’d be happy to face off against Clinton again.

“I was recently asked if Crooked Hillary Clinton is going to run in 2020? My answer was, ‘I hope so!'” he tweeted.

Clinton has said she’ll remain active in politics, but has no intention of running again.

Quarterback Colin Kaepernick began kneeling during “The Star-Spangled Banner” last season to protest racial injustice.

On Sunday, he filed a grievance against the NFL, claiming owners had colluded to stop him from playing in the league.

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