Ivan Bubenchyk, a Maidan protester from Lviv in western Ukraine, says he shot dead two Berkut special riot police commanders on Feb. 20, 2014. Bubenchyk makes the claim in a documentary film called “Brantsi” (Captives) from director Volodymyr Tyhyi, which is to be screened in cinemas around Ukraine from Feb. 25.

The film reconstructs the events before the mass shootings in Kyiv on Feb. 20, 2014, when 53 people were killed – including four police officers.