The video shows rapid-fire shots during a shootout in Highland Park

A chilling video clip of the July 4th parade massacre in Highland Park captured two volleys of rapid-fire gunfire as screaming spectators fled the scene in terror.

The 32-second recording — apparently taken from an apartment window along the parade route in suburban Chicago — begins with the sound of gunfire echoing for several seconds.

After a brief pause punctuated by shouts and screams, the shooting resumes and continues for a few more seconds, followed by loud wailing.

The video posted on Twitter by Breaking 4 messagesalso shows brightly colored folding chairs abandoned on either side of the street and streams of people running to safety.

Meanwhile, a first responder in a yellow vest races the other way toward what appears to be danger.

At one point an adult picks up a small child and takes another’s hand before they hurry.

The carnage is believed to have been carried out using a high-powered rifle from a nearby rooftop.

Robert F. “Bobby” Crimo III, 22, has been identified by authorities as a person interested in the mass shooting that killed at least six people and injured 24.

According to local reports, Crimo was taken into custody around 7:40 p.m. local time after a brief pursuit in Lake Forest.