February 20 belongs, in the historical record, almost entirely to one figure: Anatoly Onoprienko, the Ukrainian serial killer whose decade-long campaign of violence across the former Soviet Union left at least 52 people dead before his arrest in 1996. Operating in rural areas and targeting families in their homes, Onoprienko represented a category of predatory violence that Ukrainian authorities had little framework to investigate during the upheaval following Soviet collapse. His case drew international attention both for its scale and for what it revealed about the forensic and institutional gaps of post-Soviet law enforcement. He died in prison in 2013, having never been executed despite a death sentence later commuted.