Aileen Wuornos had a troubled childhood marked by sexual abuse and early pregnancy. She became a prostitute and was in and out of jail for various offenses. In the late 1980s, she began killing older male clients who had either raped or tried to rape her, claiming self-defense. She was eventually charged and convicted of six counts of first-degree murder and was executed by lethal injection in 2002. Her case highlighted debates around the motivations and classifications of serial killers as well as defenses related to victims of abuse.