August 29, 2020 | 5:54pm

A Colorado man was allegedly stabbed this week by an unhinged stranger who yelled “Black Lives Matter!”  during a terrifying attack authorities called a hate crime, reports said.

The attack happened Tuesday evening in Aurora when the victim, identified only as Michael, was walking his dog at his family’s apartment complex, he told the Fox affiliate in Denver.

Suddenly, the suspect, identified by authorities as Steve Anthony Sinclair, 30, ran at Michael from a porch, allegedly brandishing a pair of steak knives, the outlet reported.

“He looked at me and jumped over the thing and said, ‘I’m going to kill you, you and your dog,’” Michael, who is white, told the station.

“He had two knives and he just jumped on top of me and he was yelling ‘Black lives matter — you should know my name!’”

Michael told cops he tried to run away and defend himself with a stick, but Sinclair, who is black, allegedly managed to stab him in the side.

“He collapsed my lung — I have a puncture in my diaphragm,” Michael told the station.

A blood-splattered Sinclair, who is black, allegedly confessed, telling arresting officers that he is a “psychopath,” according to the police reports cited by Fox.

Sinclair has been charged with attempted murder as a hate-crime, the outlet reported.

Michael and his girlfriend told Fox they no longer feel safe at their apartment complex — and that they’re looking to move out as soon as possible.

“He ruined our small little happy life right now,” the girlfriend told Fox; she was not identified by name.

“He can’t work for six weeks,” she said.

A GoFundMe page has been set up by Giuliana Buitrago to cover the victim’s medical bills.