A mourner places flowers at a makeshift memorial near the site where NYPD officers Rafael Ramos and Wenjian Liu were murdered in the Brooklyn borough of New York.

NEW YORK — The memorials are growing, from the site where two New York policemen were murdered to the station house where they reported for duty each morning.

On Friday, a wake was held for Officer Rafael Ramos, who died alongside his partner, Wenjian Liu, in a shooting that turned a normally festive week into one of mourning, political tension and concerns over copycat crimes.

Ramos’ casket arrived shortly after noon outside Christ Tabernacle Church in Queens, where the family worshipped and where the daylong viewing and wake was being held. The avenue fell silent as hundreds of officers stood at attention and spectators watched the slow procession.

A cordon of police saluted the casket as other officers carried it through the church doorway and beneath a Christmas wreath. The doors closed behind them.

The church’s front doors were pushed open to admit the growing crowd. Hundreds of uniformed officers were the first to stream inside to pay their respects. Thousands of others, many who did not even know Ramos, including firefighters from various jurisdictions, had waited quietly for hours outside the church until they could be allowed inside for the viewing.

The line of people snaked from the church down several blocks through a residential neighborhood in the Glendale area of Queens, past houses and around several corners.

Ian Gomez, 45, was one of those in the crowd. He said he came because he felt like he could have been Ramos.

“I wanted to be a cop when I was a kid. That could’ve been me. It could be my son if he decides to be a police officer. It could’ve been anyone’s dad or brother or son,” Gomez said.

Rita Genaros was also in the crowd.

“What happened to the officers was so awful, and right before Christmas, that makes it even worse,” she said. “I had to be here. I can’t do anything but at least I can show my support.”

Ramos’ funeral will take place Saturday, and Vice President Joe Biden will attend.

Mayor Bill de Blasio also planned to be there, despite the growing animosity between him and police union leaders who say his attitude toward the 35,000-strong police force encouraged Ismaaiyl Brinsley’s deadly attack last Saturday in Brooklyn.

Brinsley, 28, shot Ramos and Liu as they sat in their patrol car. He then shot himself to death in a nearby subway station. Officials say that Brinsley had shot and wounded his ex-girlfriend outside Baltimore hours earlier.

Brinsley had posted online anti-police rants that indicated he was angry over the deaths of unarmed black men at the hands of police. But he also had a long arrest record and a history of emotional problems that led even his mother to fear him, police said.

Ramos was 40 and the father of a 13-year-old son. Liu, 32, was married two months ago. City officials say they are trying to help his family obtain visas for Liu’s relatives in China so his funeral can be arranged.

As flowers, candles and symbols of the holiday season, including Christmas trees and menorahs, piled up at memorials to the officers, police announced the arrests of more people in connection with threats against police.

The most recent arrest came on Christmas Eve, when police say someone called 911 to report overhearing a man in a bank talking on his cellphone about “killing cops and possessing firearms in his house.”

A statement from police said a man fitting the witness’ description was arrested a short time later. A search of his house turned up two firearms, including one with a defaced serial number; two bullet resistant vests; brass knuckles and a holster, police said. The man, Elvin Payamps, was being held on illegal weapons charges and other charges.

Police said that since the deaths of Ramos and Liu, they have assessed “hundreds” of online postings and calls to 911, and that about 40 resulted in investigations into threats against the NYPD. “About half have been closed or referred to other agencies,” the NYPD said.

It said seven people so far have been arrested in connection with threats, including people accused of making fake 911 calls to report threats and others who posted threats on social media.