Weird I was just debating this and wrote a few thoughts. The video from MIT below is excellent. Here:
http://video.mit.edu/watch/democracy-after-citizens-united-9635/
A few observations.
The problem with CU is it assumes a corporation is a definable entity, and as such acts in a manner that makes sense in the way in which we consider a person for instance to act. Corporate goals rarely align with society's goals, or even with a nation's goals. Corporations exist to make money for their stock holders and executives. Persons exist as individuals, as recognizable responsible agents. Corporations operate outside the democratic framework that individuals operate under. Corporations operate equally well under communism as under democracy, they also operate across borders with resources and policies that differ from place to place. Funds from overseas operations then can enter and provide monies that influence local politics, and even transnational politics, by creating and funding ads and other various media that manages the idea landscape. CU gave enormous power to money that comes from anywhere to control media in our democracy with no responsible agent or clear understanding of who benefits, how, or why they benefit.
OT Unions suffer the same sort of dilemma but unions operate locally and specifically, when I was in a union I often disagreed with their decisions or policies. But I was also a recipient of the benefits of the union and having seen the manner in which corporations treat workers through mergers and benefit fights, I see unions as I see lawyers, a wall against empty greed and corporate irresponsibility.
"Corporate propaganda directed outwards, that is, to the public at large, has two main objectives: to identify the free enterprise system in popular consciousness with every cherished value, and to identify interventionist governments and strong unions (the only agencies capable of checking a complete domination of society by corporations) with tyranny, oppression and even subversion. The techniques used to achieve these results are variously called 'public relations', 'corporate communications' and 'economic education'."
Alex Carey 'Taking the Risk out of Democracy' [see also [http://video.mit.edu/watch/democracy-after-citizens-united-9635/]Home | MIT Video[/url] ]
"Historian Phillips-Fein traces the hidden history of the Reagan revolution to a coterie of business executives, including General Electric official and Reagan mentor Lemuel Boulware, who saw labor unions, government regulation, high taxes and welfare spending as dire threats to their profits and power. From the 1930s onward, the author argues, they provided the money, organization and fervor for a decades-long war against New Deal liberalism—funding campaigns, think tanks, magazines and lobbying groups, and indoctrinating employees in the virtues of unfettered capitalism." [ame=http://www.amazon.com/Invisible-Hands-Making-Conservative-Movement/dp/0393059308/ref=sr_1_1?ie=UTF8]Amazon.com: Invisible Hands: The Making of the Conservative Movement from the New Deal to Reagan (9780393059304): Kim Phillips-Fein: Books[/ame]