Our mainstream media is corporate, reflecting the corporate interests that sponsor them. Part of those corporate interests have someting to do with Wall Street. Maybe the media blackout is a function of the fact that the corporatist feel their very preferred way of life under threat. They want it to "blow over," and so the media they own do not give the Occupy movement the coverage you and I think it deserves.
Well, good thing we have the alternative media. A good radio, television, and Internet news program is DemocracyNow! with Amy Goodman and Juan Gonzales. You can find them on DemocracyNow.org.