“The crowd grew to about 10,000 by noon – a significant gathering for a weekday...”
Disclaimer: The quote is from Politico but I’ll take it
http://www.politico.com/news/stories/1109/29183.html
A couple of thousand, yes. I HIGHLY doubt 10,000. The West Lawn wasn’t even filled completely. There were some on the South Lawn, but not on the North side.