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PHILADELPHIA — Scores of Bernie Sanders supporters felt burned Tuesday evening when Hillary Clinton clinched the Democratic nomination in Philadelphia, expressing their disappointment by walking out of the Wells Fargo Arena.

With at least 2,382 delegates pledged to her, Clinton became the first woman to be nominated to a major U.S. party ticket after a tough primary fight against Sanders.

Sanders spoke at the end of the roll call asking for unity within the Democratic party and throwing his support behind the former first lady and secretary of state, saying he “move[s] that Hillary Clinton be selected as the nominee of the Democratic Party for president of the United States.”

Within minutes of Sanders speaking, a throng of his supporters walked out of the convention center, waving “Bernie or Bust” signs in the air.

That moniker — Bernie or Bust — has drawn criticism toward a fragment of Sanders’ supporters who say they refuse to vote for Clinton.

During Monday night’s convention, comedian Sarah Silverman,  a vocal Sanders supporter who now vows to support Clinton, called out that contingent, saying they were being “ridiculous” for rejecting the then-inevitable and now-official Democratic candidate.