You're blowing Marxism to pieces
Baby, they're arguments, the pieces

from LCD Soundsystem – Dance Yrself Clean Lyrics on Rap Genius

Meaning

Marxism is a metaphor for the music industry and how its controlled to be repetitive as well as chocking the music scene. There are a few though, including himself, that are able to break the mold and blow the whole idea of mainstream music to pieces.

James Murphy is saying that through dancing and having fun, they’re disproving Marxism by partaking in something as stereotypically capitalist as dancing and nightlcubs

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