Disturbing new video shows the moment a big-hearted activist and talented poet was randomly stabbed to death in front of his girlfriend – who desperately tried to get help in the aftermath of the harrowing attack in Brooklyn.
Ryan Carson, 32, and his girlfriend can be seen sitting on a bus stop bench in Bedford-Stuyvesant and speaking with his girlfriend as the two made their way home from a wedding on Long Island just before 4 a.m. on Monday, according to the surveillance footage.
Wearing a gray suit, Carson and the young woman, dressed in a blue, sleeveless gown, get up and begin to walk down the block, in the same direction as a man in a dark-colored sweatshirt who had just strolled past the pair at the B38 bus stop, with his hood up over his head and his hands in his pockets.
Just feet ahead of them, the stranger begins kicking scooters parked near the curb for no apparent reason, the footage – obtained by The Post on Tuesday – shows.
Suddenly, the unhinged man turns to Carson and says: “What the f–k are you looking at?”
The beloved community activist – who replied that he wasn’t looking at anything – then stepped between his girlfriend and the irate stranger, who began to advance on the couple.
“I’ll kill you!” the maniac threatens as Carson pleads with him to “Chill! Chill!” and holds up his hand.
But the attacker pursues Carson, pulling a knife, as the victim’s girlfriend – running up behind them – is heard frantically yelling “Please, please, please!”
As he runs, Carson tumbles over the bench the couple had earlier been sitting on.
The assailant then grabs his jacket and knocks him onto the ground, savagely stabbing him multiple times in the chest as the victim’s girlfriend catches up to them.
He then walks away as Carson lies curled up on the ground, before returning and approaching the terrified woman, who raises her hand to stop him.
The sicko spits on her – while still clutching the knife – before kicking Carson’s mortally wounded body and storming away.
An unknown woman then appears near the corner of the frame, yelling, “Don’t hurt him!” at the crazed man and repeating what sounds like the name “Brian” or “Bryan.”
Investigators believe that the woman and the suspect knew each other prior to the slaying, police sources said Tuesday.
“I’m so sorry!” the same woman exclaims as she approaches Carson, still lying on the sidewalk, as his worried girlfriend stands at his side.
“Go watch him,” the victim’s girlfriend directs the woman while pointing at the attacker.
“I’m calling 911,” she adds.
The video cuts off as the girlfriend kneels over her loved one’s body, gently moving his arm that had been hanging over his face.
Warning: Disturbing content.

She held her gravely injured boyfriend in her arms before he was rushed to Kings County Hospital Center, but it was too late – as the stab wound had pierced his heart, according to cops and sources.
The horrific attack happened at Lafayette Avenue and Malcolm X Boulevard, just blocks from the Bedford-Nostrand avenues train station, where the couple had gotten off the subway on their way home from the wedding, cops said.
No arrests had been made in the heinous crime by Tuesday afternoon, but a “Wanted” poster circulated showing a close-up of the suspect wearing a black “Champion” sweatshirt.
Investigators have not recovered the murder weapon, which sources said the suspect initially tossed in a pile of trash before quickly going back to retrieve it.
A pair of glasses – apparently worn by the victim – and two books that Carson’s girlfriend appeared to have been carrying during the violent ordeal were found by investigators at the site of the attack.
Carson – who came to the Big Apple from the Boston area in 2010 to attend Pratt Institute – was a senior solid waste campaign manager at the New York Public Interest Research Group (NYPIRG), according to his LinkedIn.
His activism focused on sustainability and environmental policies, friends told The Post.
In a statement, NYPIRG called Carson “a beloved staffer, colleague and friend, and a creative, talented, relentless and upbeat advocate for students and the environment.”
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