Michelle Obama and Others Defend Greta Thunberg Against Trump

“Don't let anyone dim your light.”

Michelle Obama and others offered words of encouragement to Greta Thunberg after President Donald Trump mocked her.

After the 16-year-old climate activist was named TIME’s 2019 Person of the Year, Trump chided her on Twitter, saying, “So ridiculous. Greta must work on her Anger Management problem, then go to a good old fashioned movie with a friend! Chill Greta, Chill!"

Without explicitly mentioning Trump’s harsh words, former first lady Michelle Obama tweeted out to Thunberg on Friday, saying, “@GretaThunberg, don’t let anyone dim your light. Like the girls I’ve met in Vietnam and all over the world, you have so much to offer us all. Ignore the doubters and know that millions of people are cheering you on.”

Others came to Thunberg’s defense, including presidential candidate and former VP Joe Biden, who responded to Trump’s spiteful tweet, saying, “What kind of president bullies a teenager?"

Stephen Colbert also condemned Trump’s comments on his Thursday show.

“But since Thunberg is Swedish, let me put this in culturally appropriate terms: Mr President, go Fjuk yourself. Which I can say on CBS, because Fjuk is an island in Sweden,” Colbert said.

Thunberg first garnered attention in August 2018 when she began skipping class to sit outside Swedish Parliament and demand action against climate change. This helped spark a global movement of young people demanding action against the global environmental crisis. She is the youngest person to ever receive TIME’s Person of the Year.

Seemingly unperturbed by Trump’s tweet against her, Thunberg cleverly clapped back by updating her Twitter profile to say, “A teenager working on her anger management problem. Currently chilling and watching a good old fashioned movie with a friend.”