Teacher fired after suggesting 'reciprocity' against NYPD gathered to mourn murdered detective Jason Rivera: '5/30/20: NYPD SUV drives into a crowd of protestors. Ideal conditions for reciprocity.'

A New York City math teacher is out of a job after he created an Instagram post suggesting "reciprocity" against NYPD officers gathered in the city to mourn the death of NYPD Detective Jason Rivera.

Rivera was killed last week during an ambush-style attack while responding to a domestic incident in the city.

What are the details?

Chris Flanigan, who worked at Brooklyn's Coney Island Prep, created the post in response to the massive crowd of officers that lined the city's streets to honor Rivera for his ultimate sacrifice.

He shared a snapshot of the myriad officers paying tribute to Rivera and captioned it, "5/30/20: NYPD SUV drives into a crowd of protesters. Ideal conditions for reciprocity."

Flanigan was apparently referring to a 2020 incident that took place following George Floyd's murder in which an NYPD vehicle drove through a group of Brooklyn protesters who were demonstrating against police.

At the time, former NYPD Commissioner Dermot Shea insisted that the officers were not using the SUV to harm protesters, and then-NYC Mayor Bill de Blasio said that protesters should have moved out of the way.

No injuries were reported at the time.

Flanigan's post quickly went viral, and law enforcement officials who caught wind of the math teacher's quip found themselves at a loss over the remarks.

“For a school teacher to condone an act of terrorism is reprehensible. I wouldn’t want him giving my own children instruction of any kind,” an unnamed Manhattan police officer told the Post for its reporting on the incident.

A Brooklyn officer added, "You have a city worker wishing physical harm or worse to fellow city workers during a solemn service. It is the ultimate act of cowardice.”

What did the school say?

The school on Sunday said that Flanigan is no longer employed at the school.

Coney Island Prep CEO Leslie Bernard Joseph issued a statement on Flanigan's termination and said, "We do not condone or promote violence of any sort. As of this afternoon, Mr. Flanigan is no longer employed at Coney Island."

“The teachers and staff of Coney Island Prep are public servants; and like all public servants we hold ourselves to a much higher standard,” Joseph added. “We work hard to serve the young people in our community, and we know our police officers do as well, taking innumerable risks, to keep our city safe.”

Flanigan on Sunday told the New York Post that he'd been facing death threats ever since posting the now-deleted Instagram Story.

He added that the message was "misconstrued" and pointed out that he was only trying to convey a message of police "vulnerability."

“I respect the NYPD. I do not condone violence,” he told the outlet. “A 22-year-old police officer murdered in the line of duty is reprehensible. I’m devastated by that.”

Flanigan wasn't the only one to poke the hornet's nest this weekend: On Saturday, New York City-based actress Jacqueline Guzman was removed from her theater company after commenting that street closures due to the large gathering of police officers were ”f***ing ridiculous.”