Mikhail Khodorkovsky, addressing thousands on Kyiv's Independence Square, has accused Russia of complicity in the police violence that claimed more than 100 lives during protests against Ukraine's ousted pro-Russian president.
Khodorkovsky, a fierce critic of Russian President Vladimir Putin who spent a decade behind bars, said on March 9 that force was used against the protesters last month "with the agreement of the Russian authorities."
He told the crowd "I want you to know -- there is a completely different Russia."
In response, demonstrators chanted "Russia, wake up!"
Khodorkovsky on March 8 met with demonstrators who continue to occupy the Maidan, or Independence Square, despite the ousting of President Viktor Yanukovych.
He is due to give a lecture at a Kyiv university on July 10.
Based on televised reports and reporting by Reuters and AFP