The Day of Remembrance for Those Tortured or Killed in Captivity is observed in Ukraine every July 28. Established by the Verkhovna Rada in 2025, this annual observance commemorates the victims of the Olenivka prison massacre, which occurred during Russia's full-scale invasion of Ukraine. The date marks the anniversary of an explosion in a barrack where Ukrainian prisoners of war were held, resulting in at least 53 deaths and over 130 injuries. The observance honors the memory of those who died in Russian captivity and highlights the severe violations of international humanitarian law faced by Ukrainian prisoners, including torture and cruel treatment. Notable cases, such as that of journalist Victoria Roshchyna, further illustrate the tragic consequences of these abuses. The day serves as a reminder of the ongoing plight of prisoners and the need for accountability.