'Kill the bullies with kindness' - Millie Bobby Brown on World Children's Day

A year after the United Nations children's agency UNICEF appointed Millie Bobby Brown, the star of hit Netflix series "Stranger Things," the youngest-ever goodwill ambassador, the 15-year-old had a message for all the bullies in the world on World Children's Day: "Always love, love, love. And, kill them with kindness."

"I've personally suffered from bullying," Brown told Reuters at the United Nations in New York on Wednesday (November 20). "And it shouldn't even be a question anymore. You know, hate shouldn't be filling this world. We should be loving each other and caring for each other, just spreading love back to whoever is giving you so much hate."

Brown has spoken out in the past against bullying and deactivated her Twitter account last year after a slew of hate-filled comments.

Emmy-nominated Brown plays a girl with special powers on "Stranger Things," which became a global phenomenon after its debut on Netflix in 2016. Viewers were drawn to the show's 1980s throwback and the supernatural mystery haunting the small town of Hawkins, Indiana.

World Children's Day is celebrated every year on November 20, to both celebrate children and their rights, but also to draw the world's attention to the terrible conditions that still prevail, especially for the millions who are unschooled, unprotected and uprooted.

Brown uses her platform, which includes more than 30 million followers on Instagram, to speak out for millions of children and young people whose voices have been silenced.

(Production by Andrew Hofstetter and Roselle Chen)