This guy's manifesto is a VERY strong case against Leftists.
I know this forum is 3/4+ leftist, and truth hurts, but you have got to read the whole 35 000 word essay.
Leftism appeared along the Industrial Revolution, and is the root source of Communism, Nazism et Islamism.
http://en.wikisource.org/wiki/Indust..._infe riority
More technology = More leftism = Less freedom.