Families sue world's biggest tech companies for exposing children to harmful products

Hundreds of families are suing some of the world's biggest technology companies, claiming they knowingly expose children to harmful products.

The lawsuit against Meta - the owner of Facebook and Instagram - plus TikTok, Google and Snap Inc, the owner of Snapchat, is one of the largest ever mounted in Silicon Valley.

The plaintiffs include ordinary families and school districts from across the US, who claim that the platforms are harmful by design.