Here’s photo of the crowd from the roof of the WI Capitol Building:
Image: 27569841_640X480.jpg

It’s from this story on the rally:
channel3000.com

I think in that shot the seated tea party folks are obscured by the top of the building. I believe what you’re seeing is mostly the surrounding counter-protest.

Here’s a good side-shot of the crowd:
Image: 0yx1t.jpg

The Tea Party folks are the seated group in the lower-righthand corner. The counter-protesters are around them on all sides, including the top-right. There a few Gadsden flags but almost all the signs visible are the opposition.