Mourners gathered in Brooklyn today to remember and pay their respects to fallen NYPD Officer Wenjian Liu.

Liu and his partner, Officer Rafael Ramos, were executed as they sat in their patrol car two weeks ago.

Bryan Llenas reported from the wake on "America's News Headquarters" this afternoon. Llenas said that it has been a nonstop stream of NYPD officers and law enforcement officers from all over the country coming to pay their respects.

Police Commissioner Bill Bratton and New York City Mayor Bill de Blasio attended the wake.

Llenas reported that both Bratton and de Blasio received salutes from police officers, a much different reception than de Blasio got at Ramos' funeral last weekend, when many officers turned their backs on the controversial mayor.

In a department-wide memo following that incident, Bratton called the turning of the backs "an act of disrespect" and discouraged officers from doing it again at Liu's wake.

New York Governor Andrew Cuomo was also in attendance and called for an end to the tension in New York City.

"What makes New York strong is that we take our diversity and we make it a strength and not a weakness," Cuomo said. "And we're always good at coming together when things are at their worst."

"And that's what we have to do now. We have to stop any fights within the family, and we have to come together as the family of New York."

Also at the wake were 30 of Liu's family members, including his widow. Liu's funeral will take place Sunday morning.

Watch the clip above.