Ted Kaczynski, the Harvard-educated mathematician who ran a 17-year bombing campaign that killed three people, died in prison last year. But his manifesto promoting violent rebellion against the modern world continues to inspire copycat attacks Because of industrial action taking place by members of the National Union of Journalists at the Guardian and Observer this week, we are re-running an episode from earlier in the year.. Help support our independent journalism at theguardian.com/infocus