article_snippet: More than 20,000 protesters have marched through Moscow to protest against the killing of Russian opposition leader Boris Nemtsov.
article_snippet: More than 20,000 protesters marched through Moscow in a mass demonstration against the killing of Russian opposition leader Boris Nemtsovopposition leader Boris Nemtsov, organisers said .
article_snippet: Thousands of protesters marched in Moscow in memory of Boris Nemtsov, who was shot dead in a 'contract hit' on Friday .
article_snippet: Thousands of protesters have marched through Moscow following the killing of Russian opposition leader Boris Nemtsov .
article_snippet: The vast crowd of thousands of Russians were marching to commemorate murder opposition leader Mr Nemtsov .
highlights_snippet: More than 20,000 march through Moscow to protest against the killing of Russian opposition leader Boris Nemtsov .
  