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DNC kicks off at the Wells Fargo Center

Associated Press

The star power heated up in Philadelphia for the raucous first day of the Democratic National Convention with Triumph the insulting, cigar-chomping puppet dog joining sweltering street protesters and actress Rosario Dawson urging Bernie Sanders supporters to "listen" to their man.

Singer Paul Simon, actress Eva Longoria of "Desperate Housewives" and the sharp-tongued comic Sarah Silverman were among the celebs on the speaking schedule.

Fans and fashionistas, meanwhile, awaited the dress reveal of first lady Michelle Obama, who was slated to speak Monday night.

Earlier in the day, "Lethal Weapon" actor and activist Danny Glover addressed the convention's black caucus, describing Republican presidential nominee Donald Trump as a fascist and urging caucus members to "listen to new voices that demand speaking truth to power."

Boyz II Men performed early and singer Demi Lovato will follow in the convention hall, while Grammy winner Alicia Keys, who founded a social justice organization called We Are Here, prepared to perform and speak at an opening-night event hosted by the news site Politico. Comedian Chelsea Handler was also expected to make an appearance at the Politico Hub, a viewing and speakers' lounge hosted by the site.

Actresses Lena Dunham of "Girls" and America Ferrera, the star of TV's "Ugly Betty," were among the notables to attend a bash hosted by Glamour magazine.

But it was Triumph, otherwise known as Robert Smigel, and Dr. Cornel West, the academic and author, who alone among big names joined hundreds of people who marched and protested in sizzling temperatures.

West condemned the Democratic Party, saying it is dominated by corporate interests that must afford populists more respect: "The system needs to be fundamentally changed and transformed."

On the eve of the convention, actresses Shailene Woodley and Susan Sarandon and Glover joined more than 1,000 people for a climate rally, vowing to keep up the fight climate and environmental justice issues even though Sanders, their preferred presidential candidate, would not be in charge.

Woodley urged Sanders supporters to remain calm and Sarandon thanked him for "igniting this spark." Dawson, also a Sanders die-hard, was arrested at a "Democracy spring" protest in April at the White House.

Click here Monday speaker details, as listed on the DNC's official website.

Click here Tuesday speaker details, as listed on the DNC's official website.

Click here Wednesday speaker details, as listed on the DNC's official website.

Click here Thursday speaker details, as listed on the DNC's official website.

Click here for FOX 29 Philadelphia's complete coverage of the Democratic National Convention.