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Boris Nemtsov murder: Protest march turns critical of Putin

1 March 2015 Last updated at 18:36 GMT

Tens of thousands of people have marched through central Moscow to honour opposition politician Boris Nemtsov, who was shot dead on Friday.

They carried portraits of Mr Nemtsov and banners saying "I am not afraid".

He had been due to lead an opposition march on Sunday but his killing turned the event into a mourning rally

Sarah Rainsford reports from Moscow