Updated

Democratic presidential nominee Hillary Clinton reached out to former rival Bernie Sanders in her official acceptance speech Thursday night, acknowledging his campaign “inspired millions of Americans, particularly the young people who threw their hearts and souls into our primary.”

Sanders delegates furious with Clinton’s nomination have protested all week at the Democratic National Convention in Philadelphia with various degrees of success.

Some Sanders delegates threatened to storm out of her speech,  though Sanders himself was sitting in the audience and smiled when Clinton mentioned him.

“You’ve put economic and social justice issues front and center, where they belong,” she said. “And to all of your supporters here and around the country: I want you to know, I’ve heard you. Your cause is our cause.”

Clinton hit on key issues important to Sanders supporters -- a progressive platform for change that includes working to make “college tuition-free for the middle class and debt-free for all.”

Clinton’s speech was interrupted multiple times by chants from the crowd, though many times cheers for Clinton drowned out the hecklers.