Kudos to TheBlaze.com for breaking this story.
On Thursday May 17, 2012 a group of Occupiers marched on what they believed to be, as quoted: "Rush’s office building" / "Rush Limbaugh’s office" / "Rush Limbaugh’s studio".
But it turns out they had the city wrong. They were protesting at 190 State Street in Chicago. All they have is a station that airs Rush Limbaugh but not the man himself.