After three young girls were killed in a violent knife attack in Southport in the UK, false information about the alleged killer spread quickly online. This has led to violent, anti-immigration, protests breaking out in cities across the country.

The violence was fuelled by social media posts that falsely claimed the killer was a Muslim immigrant, with protesters seen burning shops, throwing flares at police and chanting slogans like "Stop The Boats."

• Guest: Alan Rusbridger, Editor of Prospect; fmr editor of the Guardian