Even a stopped clock is right twice a day, and db0 is absolutely correct about Citizens United v. Federal Elections Commission [PDF]. This decision is nothing more than an de jure recognition of the de facto state of affairs.
(db0 makes one small error: he claims that the US government and the capitalist ruling class have been "defecating in the spirit of liberty for the last 150 years." He's off by about two hundred years: from the very beginning of the European colonization of North America until right about 150 years ago, the US was explicitly and constitutionally a slave-owning nation (not to mention engaged in a genocidal war of aggression against the indigenous population). If chattel slavery isn't the epitome of defecation on the spirit of liberty, I don't know what is.)