Hundreds of parents who believe social media played a part in the death of their children gathered in New York recently. Standing outside the offices of Meta, owners of Facebook and Instagram, they had a simple demand. Protect our children. Showing incredible bravery, three mothers who have lost their sons tell us about their boys and what happened to them. If you are suffering distress or despair and need support, you could speak to a health professional, or an organisation that offers support. Details of help available in many countries can be found at Befrienders Worldwide. www.befrienders.org In the UK a list of organisations that can help is available at bbc.co.uk/actionline.