Sen. Bernie Sanders Bernie SandersNYT editorial board remembers Ginsburg: She 'will forever have two legacies' Two GOP governors urge Republicans to hold off on Supreme Court nominee Sanders knocks McConnell: He's going against Ginsburg's 'dying wishes' MORE (I-Vt.) on Tuesday slammed President Trump's claim that both sides were to blame for violence at a white supremacist rally in Charlottesville, Va., calling those remarks "embarrassing."

Sanders said Trump was "embarrassing our country and the millions of Americans who fought and died to defeat Nazism," in a tweet.

.@realDonaldTrump, you are embarrassing our country and the millions of Americans who fought and died to defeat Nazism. — Bernie Sanders (@SenSanders) August 15, 2017

Trump in a press conference on Tuesday doubled down on his claim that there was "blame on both sides" for the deadly violence in Charlottesville.

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White supremacists held a rally there over the weekend. And on Saturday, a man allegedly drove a car into a crowd of counterprotesters, killing one woman and injuring 19 others.

Trump said the "alt-left" was as responsible for the violence, claiming they attacked protesters who had a permit to gather.

A number of left-wing groups identifying as "antifa" or "anti-fascists" protested the "Unite the Right" rally held by white nationalists.

Sanders in another tweet said the violence "was not caused by the 'alt-left,' " and that the blame lay solely with "Neo-Nazis and white supremacists."

The violence in Charlottesville was not caused by the "alt-left," (whatever that may be). It was caused by Neo-Nazis and white supremacists. — Bernie Sanders (@SenSanders) August 15, 2017

Trump's comments Tuesday drew criticism from lawmakers of both parties. House Speaker Paul Ryan Paul Davis RyanKenosha will be a good bellwether in 2020 At indoor rally, Pence says election runs through Wisconsin Juan Williams: Breaking down the debates MORE (R-Wis.) tweeted "We must be clear. White supremacy is repulsive."