Michelle Obama has warned young people of the dangers of using social media without thinking. Speaking at the inaugural summit of the Obama Foundation in Chicago, to laughter from the audience, the former first lady said: “You don’t just say what’s on your mind. You don’t tweet every thought. Most of your first initial thoughts are not worthy of the light of day.”

Despite stating: “I’m not talking about anybody in particular,” Obama’s words were widely interpreted as being a sideswipe at Donald Trump’s behaviour on Twitter.