A protester throws a smoke bomb in Ferguson, Missouri
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Anger at Missouri protests crackdown

14 August 2014 Last updated at 13:54 BST

Police in the US state of Missouri have clashed with protesters for a fourth night amid growing anger at the fatal shooting of a black teenager by police.

Heavily armed riot police fired tear gas as they moved in on demonstrators in the St Louis suburb of Ferguson who had ignored an order to disperse.

Jon Brain reports.