George Floyd's family call for UN investigation into US police

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The family of an African-American man whose death at the hands of the police sparked protests across the world has joined a call for the United Nations to investigate police brutality in the US. Plenty of people have caught covid-19 but don't show any symptoms - so how big a role are they playing in spreading the disease around the world? And we'll talk to the young American who has convinced a major dictionary to change its definition of racism.