US dictionary Merriam-Webster is changing its definition of "racism" after a young black reader complained that people were using the existing definition to argue with her online.
Kennedy Mitchum, 22, from St Louis, says she sent a series of emails to the publisher, which has now agreed to revise its definition to stress the "systems of oppression that go hand-in-hand with racism".
"I've been having a lot of disagreements lately on social media about what racism truly means," she said in a Facebook post. "It took the fourth person of the day to copy and paste the definition as stated in the Merriam-Webster Dictionary to reach out and demand a change."

Merriam-Webster's editorial manager Peter Sokolowski told AFP that the definition would be modified after Ms Mitchum's request. The dictionary currently offers three definitions of racism, and Mr Sokolowski said that the second definition touches on Ms Mitchum's point – but that "we will make that even more clear in our next release".