 Outside Africa, the jury in the trial of Derek Chauvin, the ex-Miniapolice policeman accused of killing Judge Floyd last year, has retired to consider its verdict. The prosecution told jurors that Mr. Chauvin had murdered Mr. Floyd, but the defence said their client had currently followed police training. The court has been protected by barbed wire, high barricades and armed soldiers from the National Guard, but cities across the country are bracing for protests, regardless of the verdict. On Monday, the prosecution and the defence made their closing statements in a trial that lasted three weeks. The prosecution then had another opportunity to rebut defence arguments before the jury was sent to deliberate.