Leninism says that capitalism can only be overthrown by revolutionary means; that is, any attempts to reform capitalism from within, such as social democracy and non-revolutionary forms of democratic socialism, are doomed to fail due to the inherent contradictions of the capitalist and labor class relations. (religion.blogs.cnn.com)
I've also benefitted from and personally recommend taking some form of natural labor classes if you plan to go natural. (wellnessmama.com)
Credit Suisse says profit margins are likely to stay high due to two primary factors — an accommodative Fed and a weak labor class: (pragcap.com)