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The jury in the trial of Derek Chauvin, the ex-police officer accused of killing George Floyd last year, has retired to weigh up its verdict.

Security has been ramped up around the court building in the US city of Minneapolis, which is protected by barbed wire, high barriers and armed soldiers from the National Guard.

What impact will Derek Chauvin's trial — and its verdict — have on the way the US is policed?

Aleem Maqbool reports.