They used the same tactic in Portland,OR - free concert then inflate the numbers to the press.
I used Google Earth's "ruler" tool to measure the area of the crowd at Portland, it couldn't hold more than about 25,000 people but they kept parroting "70-80,000"
Remember, we’re talking about the mainstream press - where facts only get in the way of a good story!
I remember that controversy over the number of people who have attended the Promisekeepers gathering (’Stand in the Gap’) in Washington, D.C. on Oct 1997. (I was there). The National Park Service estimated the crowd to be over a million, but the MSM put the figure at only 400,000. Yet, the same MSM put that Million Men March at a million, but NPS, who got so much grief over it, placed it at only half a million. Farrakhan and his group just heaped insults upon insults on the NPS.