10. Aileen Wuornos
Aileen Carol Wuornos (February 29, 1956 – October 9, 2002) was a serial killer who killed seven men in Florida in 1989 and 1990. Wuornos claimed that her victims had either raped or attempted to rape her while she was working as a prostitute, and that all of the homicides were committed in self-defense. She was convicted and sentenced to death for six of the murders and was executed by the State of Florida by lethal injection on October 9, 2002.