Theodore John Kaczynski

A mathematics professor who retired to a cabin in Montana before being radicalized into an eco-terrorist. After deciding to get revenge on the "self-destructive, industrial society" that was "ruining the planet", he built and sent 16 mail bombs between 1978 and 1995 that killed a total of three people and injured 23 others. He was eventually arrested by FBI agents on April 3rd, 1996 and has been incarcerated ever since.