2003 - Sergei Yushenkov Co-chairman of Liberal Russia. Gunned down outside his home in Moscow, on 17 April 2003 just hours after registering his Liberal Russia movement as a party.
2004 - Paul Klebnikov Forbes Russia editor and investigative journalist,was killed outside his office in a drive-by shooting in Moscow in 2004.
2004 - Anna Politkovskaya Journalist Anna Politkovskaya was poisoned during a flight to cover the storming of a school in Beslan in North Ossetia.
2006 - Alexander Litvenenko Former FSB agent and whistleblower, Alexander Litvinenko died in November 2006, after drinking tea poisoned with radioactive polonium-210. He ingested the tea during a meeting with two fellow former Russian spies, Andrei Lugovoi (pictured) and Dmitri Kovtun who are accused of the murder.Lugovoi is now a Russian Duma representative.
2006 - Anna Politkovskaya Journalist Anna Politkovskaya is gunned down in the elevator of her appartment block.
2009 - Sergei Magnitksy Sergei Magnitsky was arrested after he reported a massive $250mil tax fraud scheme by Russian officials. He was imprisoned, torutured and neglected until he died in prison in November 2009.
2009 - Natalia Estemirova Prominent human rights activist, Natalia Estemirova, was found shot to death after being kidnapped on 15 July, 2009, in the Chechen capital of Grozny.
2009 - Stanislav Markelov and Anastasia Baburova Human rights lawyer Stanislav Markelov - who represented Politkovskaya- was gunned down in broad daylight on 19 January, 2009. Journalist Anastasia Baburova was shot and killed after she tried to come to Markelov's assistance.
2012 - Alexander Perepilichny A Russian businessman and whistleblower who informed about a conspiracy to cover up the theft of $230 million from the Russian Treasury that Sergei Magnitsky discovered. in May 2015, British authorities confirmed that Perepilichny had been poisoned.
2015 - Boris Nemtsov A leading opposition figure, Boris Nemtsov was gunned down just steps away from the Kremlin in February 2015.
2015 - Vladimir Kara-Murza Nemtsov's colleague, journalist and opposition co-ordinator, Vladimir Kara-Murza falls suddenly ill in May 2015. His organs fail and is kept alive on life support. On June 3, he awakes from a coma