From FaceBook: [3]

It's not about partisanship or protests, but pride.

It is time to take out the trash... literally. In true Flash Mob fashion, on Sunday at exactly 1300 hours (1:00 pm for you non-military types) we will do an extensive police call (pick up the trash) around the capitol square. Regardless of the state the grounds are in, we will do this as both a literal and symbolic way to show our respect for our home.
TEA Partiers know how this is done. It is time to show OUR pride for OUR state OUR way and be the example.
Even if you cannot attend, please share this and invite all of your sane friends who share our love of Wisconsin.

No signs, no screaming, just a necessary cleaning.