Surveillance footage of police officers in body armor waiting in the hallway of Robb Elementary School while a shooter opened fire on students and teachers has sparked a fresh round of outrage in Uvalde.

The video provided by the Austin American-Statesman on Tuesday is an unsettling 80-minute recording of what has been known for weeks about one of the bloodiest school shootings in U.S. history: Police officers, some of whom were armed with guns and ballistic shields, gathered in the corridor and waited for more than an hour before entering the building to stop the massacre.

Twenty-one fourth-grade kids and two teachers were killed in a mass shooting on May 24.

The footage from the corridor, which had not previously been made public, infuriated Uvalde residents and redoubled calls in the small South Texas city for responsibility and explanations that have been insufficient — and frequently incorrect — in the seven weeks after the shooting.

Residents at a Uvalde City Council meeting requested that police face repercussions hours after the video was made public.

The film from a hallway camera inside the school shows the gunman entering the building with an AR-15-style rifle and contains a 911 recording of a teacher shouting, "Get down!" Get in your rooms! Get in your rooms!"

Minutes after the attacker enters the building, two cops approach the classrooms, only to flee in the face of gunfire.

As the gunman approaches the classrooms, a child in the corridor can pee their head around the corner and then sprint back as shots are fired.

The footage shows a man wearing a "sheriff" vest using a wall-mounted hand sanitizer dispenser almost twenty minutes before cops enter the area.

According to officials, the 77 minutes of tape about to be released do not contain any classroom shots.

Republican legislator Dustin Burrows, who is conducting the probe, stated after the Statesman published the video that "observing the entire segment of law enforcement's response, or lack thereof, is also crucial."

However, the video alone does not explain all of the issues that remain nearly two months after the reaction by police enforcement.

In an interview with The Associated Press, Mayor Don McLaughlin of Uvalde stated, "This has been the most unprofessional investigation or handling of a situation that I've ever witnessed."

Constantly, these families are blindsided.