Mark Jeneson wrote "Make change with money, not protests" as a local view in today's Duluth News Tribune. Online it's titled "Create change through spending, not Wall Street protests".
Jeneson argues that taking all one's money out of the big banks will bring about more change than protests. However, these little private acts will only be known by a few people and may or may not spread. These little acts have a small chance of making major headlines.
To make headlines, most people need to demonstrate. They don't have the big bucks to advertise like the Koch brothers and their surrogates. Think of demonstrations as middle-class political advertising. If the cause is popular, more people will take part and more headlines about the cause will be made.