Wednesday's event comes after Beyoncé and Bruce Springsteen rallied for the Democratic candidate last week.
Stand-up Tony Hinchcliffe referred to the U.S. commonwealth as a "floating island of garbage" during Sunday's MSG rally.
"The Democratic Party is taking no vote or community for granted," said chair Jaime Harrison in a statement.
Lovato shared the heartbreaking news that baby Xiomara died.
"I’m not here as a celebrity. I’m not here as a politician. I’m here as a mother."
Newly unsealed court documents lay out the case against Durk, who prosecutors allege was the leader of a "hybrid" of a rap collective and a criminal street gang.
"Somebody has to say something," said the Fleetwood Mac frontwoman.
The late One Direction singer's "X-Factor" mentor was texting with Payne on the day he died.
Officials reportedly seized a number of items in Wednesday's action, including computer hard drives and CCTV footage.
The music superstar played a trio of songs for the 20,000-person Georgia crowd: “The Promised Land," "Land of Hope and Dreams" and "Dancing in the Dark.”