It’s going to be a long, hot week for Hillary Clinton and the Democratic Party elites in Philadelphia.

What is intended to unite the party is instead likely going to be a very public feud that will play out on millions of TV screens each day.

Bernie backers took over a DNC welcoming party Sunday night and busted out into chants of “roll call vote!”

Another angle shows the large group of Bernie backers, and includes narration by the cameraman.

“This (party) is for the delegates of the DNC, by the way,” the man said.

The Bernie backers did a mic check and one delegate took the crowd pulse of Debbie Wasserman Schultz.

They booed.

“Down with Debbie!” they chanted.

“TPP no!” they yelled.

Organizers then moved to shut the event down.