Rain was no match for hundreds who turned out to honor a slain NYPD detective on Sunday. NY1's Shannan Ferry spoke with his family and friends about why this event was so special to them.​

It's been nearly one year since Irene Moore's son was murdered.  

"To say that he'll be missed is an understatement," she said. 

NYPD Detective Brian Moore was shot in the head as he attempted to question a man while on the job in Queens.  The 25-year-old died in the hospital two days later. 

"Brian wasn't only the police officer that you saw out on the street, Brian was also somebody who loved little kids, and loved life, and he loved people," said Irene Moore. 

Now, Irene Moore is determined to make her son's memory live on.  On Sunday, hundreds turned out for the First Annual Det. Brian Moore Memorial Walk which kicked off at Belmont Park.

"He was always there for his family, and he always made us feel good when he came in the room we were always saying "Brian's here!" said Linda Bourke, who is Det. Moore's Aunt. 

The walk is the first fundraiser for a new foundation created in Moore's honor called 'B.Moore Than U Can Be.'

Organizers plan to advocate for stricter laws for career criminals and illegal gun use.  

They will also raise money for scholarships to give to underprivileged kids.  

"You know hopefully bring out the best in everybody, you know, all lives matter, the police matter, they need protection, it's respect all around," said Ann DeLutri, who is the Vice President of the organization.   

Participants marched from Belmont Park to Det. Brian Moore Way, located near the 105th Precinct where he worked.

"It's a big loss for the family, it's a big loss for the 105 precinct, it's big a loss for the city itself, and any line of duty that should always be remembered," said Deputy Inspector Jeffrey Schiff. 

"He did have an inner light, you know, he had an infectious smile, not because he was my son but he was a great guy, and I know that he's proud of this," Irene Moore said. 

By bringing about positive change in Det. Moore's name, family and friends say they hope their fallen hero did not die in vain.