Child campaigners to Zuckerberg: scrap Messenger Kids

Renewed call to drop Facebook's under-13s chat app backed by 21,000-strong petition

More than 21,000 child health advocates are petitioning Facebook chief executive Mark Zuckerberg to "pull the plug" on the company's Messenger Kids app aimed at under 13s, warning of the "addictive power of social media".

In an open letter and petition led by two groups, the Campaign for Commercial Free Childhood (CCFC) and MomsRising, the campaigners urged Zuckerberg to use his "enormous reach and influence to promote children's wellbeing."