Police have arrived ahead of a curfew in Ferguson, in Missouri, where violence erupted in the aftermath of a shooting of an unarmed teenager.
Guardian correspondent Jon Swaine reported that people were asking "Why are you here already?"
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Footage posted to YouTube shows the moving moment a nine-week-old boy hears his mother speak to him for the first time.
The tribute song features in the latest installment of the film franchise, and climbed 21 places to claim the top spot this week.