In accepting the Cecil B. DeMille Award at last night’s Golden Globe Awards, Meryl Streep delivered an impassioned speech in which she rebuked President-elect Donald Trump and his “instinct to humiliate,” specifically mentioning the time he appeared to mock a disabled reporter in 2015. This morning, Trump responded, taking to his favorite medium, Twitter, and referring to Streep as “one of the most over-rated actresses in Hollywood.”

“But there was one performance this year that stunned me,” said Streep as her speech segued toward Trump. Without mentioning Trump by name, she then described the incident when “the person asking to sit in the most respected seat in our country imitated a disabled reporter” and the anguish it caused her.

It kind of broke my heart when I saw it and I still can’t get it out of my head because it wasn’t in a movie, it was a real life,” she said.

“This instinct to humiliate, when it’s modeled by someone in the public platform, by someone powerful, it filters down into everybody’s life, because it kinda gives permission for other people to do the same thing,” she continued. “Disrespect invites disrespect, violence incites violence. And when the powerful use their position to bully others, we all lose.”

In his response to being “attacked” by “one of the most over-rated actresses in Hollywood,” Trump explained that he did not mock the reporter’s disability. Instead, he had meant to show the man “groveling” upon allegedly redacting a story from 2001 in order to distance himself from the controversial claim, made by Trump during his campaign, that huge crowds in New Jersey had cheered after the 9/11 terrorist attacks.

There is no evidence to support Trump’s allegation of such a revision taking place, and New Jersey law enforcement has denied his claim of “thousands” of people celebrating the attacks.

In today’s tweets, Trump called Streep a “Hillary flunky” and suggests that his victory over the Democratic candidate inspired her to come after him at the Golden Globes. Streep was an ardent supporter of Clinton's, and she spoke at the Democratic National Convention. Watch her speech from the Golden Globes below.