DNC Day 1: President Biden says 'America is winning' and Trump is a 'loser'

Four people were arrested after protestors breached the security fencing on the north side of the United Center, CPD Superintendent Larry Snelling said.

MORE | Protesters breach fence line near United Center on Day 1 of DNC; at least 4 arrested

CPD Supt. Larry Snelling said that four pepole were arrested after a security fence near the United Center was breached.

A small group of protesters were able to knock down at least one fence panel on the south end of Park 578 in the 1900-block of West Washington, which was part of the designated route for Monday afternoon's protest

Snelling said CPD, the Secret Service and other security partners will assess whether the fencing is sufficient and secure after the area is cleared, Snelling said. More updates on security changes would likely be announced at the Tuesday morning security briefing.

An unknown number of people were arrested after protesters breached a security fence on the north side of the United Center.

Protesters were able to breach a security permimeter outside the United Center on the first day of the DNC. Chuck Goudie reports live.

While Capitol Police wearing gas masks could be seen, it was Chicago police officers in riot gear who were called in to handle the situation. They formed a barricade to block the breached fence and pulled protesters down from the fencing inside the secured area. Several people were taken into custody who had gone through the gap in the fence.

No skirmishes or scuffles broke out as police removed the protesters back to the permitted area for the demonstration and replaced the iron fencing panels to restore the barrier.

CPD Supt. Larry Snelling was also at the scene overseeing the response.

President Joe Biden and First Lady Dr. Jill Biden checked out the DNC stage up close and personal ahead of their speaking slots Monday night.

President Joe Biden and First Lady Dr. Jill Biden took an up-close-and-personal look at the speaker's podium and DNC stage inside the United Center Monday afternoon.

During the walkthrough, Pres. Biden was asked if he was ready to pass the orch.

"I am," he replied, from the podium where he will speak later.

When asked about his message, he told reporters, "You'll hear it tonight."

A march organized in support of Palestinians in Gaza during the DNC has started, hours before its first night of programming kicks off.

Organizers with the Coalition to March on the DNC, which represents more than 200 activist organizations, said about 15,000 people were present for a rally held in Union Park, near the convention site, ahead of the march.