Arseny was a 14-year-old school student in the small town of Livny when, prosecutors say, he put leaflets criticising Putin into letterboxes. At 15 he was sentenced to five years in a juvenile colony, accused of joining an anti-Kremlin volunteer group, which he denies. His mother gave up her job and moved to Perm to be near him. He turned 18 in custody in August 2026.