Although Sen. Bernie Sanders made a generous and valiant effort to unify a deeply divided party behind presumptive nominee Hillary Clinton, his words capped a chaotic opening day for the Democratic National Convention.

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In fact, Sanders’ fans were so enthusiastic that it took the senator several attempts before he could successfully launch into his speech over the crowd’s ramped-up chants and cheers. In an attempt to honor his dedicated supporters, still grieving over his political loss, Sanders incorporated many themes from his stump speeches into his DNC appearance — almost as though he were still in the running.

“Together, my friends, we have begun a political revolution to transform America and that revolution — our revolution — continues.”

“Together, my friends, we have begun a political revolution to transform America and that revolution — our revolution — continues,” Sanders said. “Election days come and go. But the struggle of the people to create a government which represents all of us and not just the 1 percent — a government based on the principles of economic, social, racial, and environmental justice — that struggle continues. And I look forward to being part of that struggle with you.”

But Sanders could not entirely suppress his disappointment at losing the nomination to Clinton after a bitter and prolonged primary season.

“I understand that many people here in this convention hall and around the country are disappointed about the final results of the nominating process. I think it’s fair to say that no one is more disappointed than I am,” Sanders acknowledged. “But to all of our supporters — here and around the country — I hope you take enormous pride in the historical accomplishments we have achieved.”

In the end, Sanders offered his full support to Clinton in her efforts to unite the party and defeat Republican presidential nominee Donald Trump in the November election.

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“It is no secret that Hillary Clinton and I disagree on a number of issues. That’s what this campaign has been about. That’s what democracy is about,” Sanders conceded. “But I am happy to tell you that at the Democratic Platform Committee there was a significant coming together between the two campaigns and we produced, by far, the most progressive platform in the history of the Democratic Party.”

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“Hillary Clinton will make an outstanding president and I am proud to stand with her here tonight,” Sanders concluded, saying that she “must become the next president of the United States” because “the choice is not even close.”

Trump expressed his disappointment with Sanders for selling out and “abandon[ing] his revolution.”

“Sad to watch Bernie Sanders abandon his revolution. We welcome all voters who want to fix our rigged system and bring back our jobs,” Trump tweeted Monday evening during Sanders’ speech. “Bernie Sanders totally sold out to Crooked Hillary Clinton. All of that work, energy, and money, and nothing to show for it! Waste of time.”

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But even Sanders’ generous attempts at reconciliation and unification could not resuscitate the DNC from its rocky and tense first day as protesters chanted “lock her up” against Clinton outside the convention and interrupted Sen. Elizabeth Warren’s speech with chants of “We trusted you!”

Although the media made a huge deal out of the small, largely peaceful protests at last week’s Republican National Convention and the failed efforts of a few NeverTrumpers to disrupt Trump’s nomination, it was ultimately the bitter feud between Clinton and Sanders that provided the fuel necessary to throw a major party’s convention into disarray.

And no matter how hard Clinton and Sanders try to bring peace and reconciliation to their party, the voters crying out “lock her up” and “we trusted you” will not be so easily silenced.