Police warned that accused Cambridge, Mass., shooter Tyler Brown would “hurt or kill someone” again after being handed a soft sentence for opening fire at cops in 2020.

And six years later, that message proved to be prophetic — when he unloaded an assault rifle at random across a busy Cambridge thoroughfare in broad daylight Monday.

“I am a firm believer that when Mr. Tyler Brown gets out, he will hurt, or worse, kill someone,” said a Boston police officer who 46-year-old Brown was convicted of trying to kill during the 2020 shootout, which saw him fire 13 rounds from a Glock at cops from close range.

The judge didn’t listen to the 2021 victim impact statement. Instead of the recommended 13-year sentence, the psycho was instead sent to prison for a mere five to six years, NBC 10 reported.

Brown was released in January — with his old victim’s fears apparently coming true within just four months, as Brown was allegedly filmed strolling down Cambridge’s Memorial Ave. in broad daylight while blasting upwards of 60 bullets across the busy street.

The terrifying scene went down just after 1 p.m. near the Cambridge Street Bridge — steps from Harvard and MIT — where Brown allegedly appeared with an assault rifle and fired at cars and passersby, striking two who were left in critical condition.

People were sent diving for cover and cars went screeching to a halt on busy street, before a brave Marine veteran with a gun and a Massachusetts State Trooper charged into the fray and returned fire.

Brown was blown off his feet with several wounds and was apprehended by a swarm of police who whisked him away to a hospital for treatment.

It remains unclear what prompted the alleged rampage, but he was on parole for his 2020 attack on cops.

And that was just his latest conviction — in 2014 he was convicted of assaulting a victim with a knife, which apparently had little sway in a judge’s decision not to send him away for longer in 2020.

Near-victims of his latest alleged attack were just thankful there were courageous heroes on hand to thwart him Monday.

“A man came, went around his car and pulled open my car door and made like a barricade,” survivor Rachel Saveriano told NBC 10, explaining she was in her car near the shooting and froze in terror.

“He had a gun and he told me to run, and I ran and then I just ran as fast as I could,” Saveriano said of the brave ex-Marine, who she called a “hero.”

Gov. Maura Healey even thanked the Marine for “demonstrating extraordinary bravery in a moment of crisis.”

Brown will face charges of assault with intent to murder, firearms charges and “a variety of other charges,” according to Middlesex County District Attorney Marian Ryan.