Theodore John "Ted" Kaczynski (/kəˈzɪnski/ ka-ZIN-skee, or ka-CHIN-skee; Polish: Kaczyński, pronounced [kaˈt͡ʂɨȷ̃skʲi]; born May 22, 1942), also known as the "Unabomber", is an American mathematician and serial murderer. He is known for his wide-ranging social critiques, which opposed industrialization and modern technology while advancing a nature-centered form of anarchism.[3][4] Between 1978 and 1995, Kaczynski engaged in a nationwide bombing campaign against people involved with modern technology, planting or mailing numerous home-made bombs, ultimately killing a total of three people and injuring 23 others.