MAN FROM HARLEM STABS 2 PEOPLE BEFORE COPS SHOOT & KILLS HIM!

A dagger-wielding psycho was shot to death by an NYPD cop in Harlem on Wednesday night after stabbing two men in his apartment building - killing a courageous neighbor who tried to help the other victim, police said.
Carlton Lewis, 21, knifed his mother's boyfriend, Charles Davis, and fatally stabbed a good Samaritan neighbor, Marco Betancourt, inside the Frederick Samuel Houses before cops arrived at the W.144th St. complex about 6:45 p.m., police said.

An NYPD captain, sergeant and five other officers returning from a community meeting responded to a 911 call and were met outside the building by Davis, 50, who was bleeding from three stab wounds, said Deputy Police Commissioner Paul Browne.

The sergeant tended to Davis while the six other officers, who were joined by two additional cops, hurried up the stairs to confront Lewis, whose bloodstained dagger had a 6-inch blade and a 5-inch handle.

With the medieval-looking dagger in hand, the rampaging psycho charged at the cops in the stairwell, between the second and third floors.

"He keeps coming. He is closing the distance between the lead officer and himself, coming at the officers with the dagger," Browne said.

"The lead officer yells three times: 'Drop the knife!' He does not, and continues to come ... and the [lead] officer fires."

The lead officer, Adlai Pinney, fired at least five shots, hitting the madman three times in the torso and once in the left shoulder.

The bullet-riddled lunatic even tried to hack at cops after hitting the floor, forcing one of them to kick the dagger out of his hand, police said. He died at the scene.

The bloodshed began when Lewis knifed Davis inside the fourth-floor apartment where the two lived with Lewis' mom, Towanda Lewis.

"The woman's son was kicking the boyfriend out," a police source said. "But he didn't move fast enough, so he stabbed him."

Davis - who was in surgery at Harlem Hospital on Wednesday night - told police Betancourt came to his aid as he tried to flee Lewis' murderous rage, Browne said.

Betancourt, 39, who had a 2-year-old son and collected disability, was found "in a pool of blood" inside his fourth-floor apartment. He had been stabbed multiple times and died at the scene, Browne said.

Betancourt's son was found, unharmed, inside the apartment where his brave father lay dead, Browne said.

"He was a stay-at-home dad who was nice to everybody," neighbor Julio Rosario, 29, said of Betancourt. "We were praying it wasn't him