U.S. Rep. Alexandria Ocasio-Cortez slammed President Donald Trump, who shared a grim video featuring Rep. Ilhan Omar’s controversial 9/11 remarks alongside footage of the Twin Towers being attacked.

“Members of Congress have a duty to respond to the President’s explicit attack today,” Ocasio-Cortez tweeted Friday. “@IlhanMN’s life is in danger. For our colleagues to be silent is to be complicit in the outright, dangerous targeting of a member of Congress. We must speak out.”

She also shared an image of the words of “First they came … ,” the famous poem by German theologian Martin Niemöller that was inspired by the tragedies of the Holocaust.

The poem reads:

“First they came for the socialists, and I did not speak out—
Because I was not a socialist.

“Then they came for the trade unionists, and I did not speak out—
Because I was not a trade unionist.

“Then they came for the Jews, and I did not speak out—
Because I was not a Jew.

“Then they came for me—and there was no one left to speak for me.”

Ocasio-Cortez’s tweet sparked major backlash, including a tweet from Ben Shapiro who wrote:

“There’s something deeply disturbing about AOC making Holocaust references to defend an open and unrepentant anti-Semite who is merely being criticized.”

Read more at Fox News.