The George Floyd murder trial gets under way in Minneapolis and there is a massive security operation, as Derek Chauvin appears in court. The National Guard has been patrolling the court house where the jury is selected. Here's what you need to known about the security, in under a minute. Subscribe to #BBCMyWorld here: null #shorts #youtubeshorts The National Guard is a part of the US military that is generally called up to respond to state-level emergencies, such as natural disasters. And, unlike most of the other military forces, it can also serve a domestic law enforcement role which is why it's been deployed outside the trial. Former police officer Derek Chauvin is on trial over the May 2020 killing of George Floyd, an unarmed black man. Mr Chauvin, who is 44 years old, is accused of second-degree unintentional murder and manslaughter in the death of Mr Floyd on 25 May last year. BBC My World makes content about global issues for youth audiences around the world. This channel is brought to you by executive producers Angelina Jolie and the BBC World Service to show you the news behind the headlines, how to fact-check stories and spot fake news.