Oleksandra Matviichuk, Head of the Centre for Civil Liberties (Ukraine), Oleksandr Pavlichenko, Executive Director of the Ukrainian Helsinki Human Rights Union, Oleksandra Ustinova, MP, Member of the Law Enforcement Committee of the Ukrainian Parliament. They will be discussing the massacres in Bucha, Irpin, Hostomel, and other towns occupied by Russian armed forces, as well as next steps in collecting evidence for war crime prosecution.