Donald Harvey (April 15, 1952 – March 30, 2017) was an American serial killer and orderly who claimed to have murdered 87 people, though official estimates are between 37 and 57 victims. Harvey said he started out killing to "ease the pain" of patients. As time progressed, he began to enjoy it more and more and became a self-described "angel of death". Harvey was serving 28 life sentences at the Toledo Correctional Institution in Toledo, Ohio, having pleaded guilty to murder charges to avoid the death penalty. Wikipedia
Who is popular today?