Art requires no discipline, no talent, no morals, no reference to the truth and no brains whatsoever. Naturally that's where the Left flocks. Like, wow!, they don't have to work and what's really neat is, sometimes people throw change in their guitar case.
Art is all "Let's Pretend." But then, socialism itself is "Let's Pretend."
Symbolism, they love symbolism. Drive a Prius where everyone can see, park it in the evening and use the SUV for serious driving. Their world evolves around symbols, handy replacements for facts.