Well, the Charlotte Observer is going to say about 300. It could have been more given people coming and going.
The REALLY good news is that this was with temperatures in the 40's and rain (which thankfully disapated about 10 minutes before the rally...but people were already there)
Yesterday at the anti-american rally, the sun was shining and it was in the 70's. They only had about 100-125.
We would have had 1000 without the rain!