The Ukrainian sax player who survived Putin’s torture prisons

"They beat you until you had huge bruises, then they specially beat you on the bruises … There were times that they hit us so much, I remember I was looking around for pieces of glass to slice my veins with. You just can't last that long for so many months without starting to go crazy," he said.

During the daily beating ritual, the men were forced to recite poems begging forgiveness from the "fraternal Russians" for Ukraine's errant ways. They had to memorise the poems, and were beaten harder if they forgot lines or if the guards considered they were not putting enough emotion into them.
https://www.theguardian.com/world/article/2024/may/12/ukrainian-saxophonist-putin-torture-mariupol-siege