The Luddites were 19th-century English textile artisans who protested against newly developed labour-replacing machinery from 1811 to 1817. The stocking frames, spinning frames and power looms introduced during the Industrial Revolution threatened to replace the artisans with less-skilled, low-wage labourers, leaving them without work.
Economists apply the term Luddite fallacy to the notion that technological unemployment leads to structural unemployment (and is consequently macroeconomically injurious). If a technological innovation results in a reduction of necessary labour inputs in a given sector, then the industry-wide cost of production falls, which lowers the competitive price and increases the equilibrium supply point which, theoretically, will require an increase in aggregate labour inputs.
http://en.wikipedia.org/wiki/Luddite