People that oppose technological change/progress or technology itself.
The first video game about Luddites was released on August 21, 2001.
See also: reactionaries
These don't necessarily go out of their way to impede/destroy technology, but rather abstain or remove themselves from the presence of such (as in, take a lifestyle that suits them). However, there's plenty of extremists out there that can make the rest seem worse than they are.