John McAfee, of antivirus fame, led eccentric life: Loved drugs and guns, once questioned for murder, twice ran for president. Then died in Spanish prison.

John McAfee announces his candidacy for president Sept. 9, 2015, in Opelika, Alabama. McAfee, the outlandish security software pioneer who tried to live life as a hedonistic outsider while running from a host of legal troubles, was found dead in his jail cell near Barcelona, Spain, on June 23, 2021. (Todd J. Van Ernst/Opelika-Auburn News/AP)