article_snippet: Marina Litvinenko, the wife of murdered Russian spy Alexander Litvinenko, joined demonstrators outside the Russian Embassy London .
article_snippet: A man prepares portraits of murder opposition leader Mr Nemtsov, with the opposition claiming the killing was politically motivated .
article_snippet: Critics linked the killing to the deaths of journalists at the French political magazine, Charlie Hebdo, who were slaughtered by Islamic extremists after publishing cartoons of the Prophet Mohammed.
article_snippet: Murdered spy Alexander Litvinenko's widow has said Boris Nemtsov's shooting was the Russian government's way of saying that anyone who spoke out against the Russian opposition leader walking along the Great Moskvoretsky Bridge in Moscow would be killed.
article_snippet: Marina Litvinenko described news of the veteran liberal politician's shooting as 'absolutely devastating'.
article_snippet: Marina Litvinenko was asked on BBC Radio 4's Broadcasting House programme whether Marina Litvinenko believed the veteran liberal politician's shooting was linked to Marina Litvinenko husband's poisoning.
article_snippet: Marina Litvinenko replied: 'It's a different way to kill a person, but a way to present that anybody who will try to say something against us will be killed.'
article_snippet: It is a blow to Russia.
highlights_snippet: Widow of murdered Russian spy Alexander Litvinenko says Widow of murdered Russian spy Alexander Litvinenko had 'no doubt' killing was politically motivated .
  