The son of a woman killed on 9/11 slammed Rep. Ilhan Omar at Wednesday’s memorial service for being insensitive to victims’ families when she gave a speech saying, “Some people did something” to describe the terror attacks.

Wearing a shirt with the Muslim Minnesota congresswoman’s infamous words emblazoned on it, Nicholas Haros Jr. paused from reading the names of the dead at the televised Ground Zero service to lambaste Omar.

“Madam, objectively speaking, we know who and what was done. There is no uncertainty about that. Why your confusion?” Haros Jr. (inset) said.

“On that day, 19 Islamic terrorist members of al Qaeda killed over 3,000 people and caused billions of dollars of economic damage. Is that clear?”

Haros then continued driving home his point.

“I was attacked, your relatives and friends were attacked, our constitutional freedoms were attacked and our nation’s founding on Judeo-Christian principles were attacked. That’s what some people did.”

“Got that now?”

Haros also said he wanted the Minnesota Democrat and her and pals in the so-called “Squad” — Rep. Alexandria Ocasio-Cortez (D-Bronx/Queens), Rep. Rashida Tlaib (D-Mich.) and Rep. Ayanna Pressley (D-Mass.) — to know “just who did what to whom.”

“Show respect in honoring them, please,” he said of the victims. “American patriotism and your position demand it.”

Haros, who runs an on online Catholic organization called “Facebook Apostles,” concluded by saying, “For God and country, Amen,” and making the sign of the cross.

His speech was greeted with applause at the service marking the 18th anniversary of the destruction of the Twin Towers by al Qaeda hijackers. Those clapping included several NYPD cops in dress uniforms.

Haros’ mom, Frances Haros, was killed while working in the south tower as a receptionist at a securities brokerage. She was 76.

Haros Jr. also worked in the south tower, but was out of town on business trip.

Now retired, Haros lives in Ocean County, NJ, and told The Post that Omar’s words were “cruel and hurtful.”

“An apology would be nice,” he added.

This wasn’t the first time he used the 9/11 memorial service to rip politicians. Last year he didn’t single anyone out, but he called on pols to “Stop using the bones and ashes of our loved ones as props for your political theater.”

Omar made her comment last March during a banquet held by the Council on American-Islamic Relations in Woodland Hills, Calif. The former Somali refugee said the group “was founded after 9/11, because they recognized that some people did something and that all of us were starting to lose access to our civil liberties.”

Omar and Tlaib are the only two Muslim women in Congress.

Omar on Wednesday didn’t directly respond to Haros’ comments, but posted a somber video on Twitter in which she recounted being 18 when the attacks took place.

“I was in a classroom in college and I remember rushing home after being dismissed and getting home and seeing my father in complete horror as he sat in front of that TV,” she said.

“And I remember just feeling, like the world was ending.”

Additional reporting by Bob Fredericks