Here at Glenn Beck's 8/28 rally, the crowd has been estimated at over 500,000. Believe it or not, that could be a conservative estimate. There are people who have absolutely filled the National Mall right up to the Washington Monument, with overflow to the adjacent parks on either side.
Glenn Beck opens with "Something beyond imagination is happening... We have had moments of brillians, and moments of darkness, but this country has spent far too long worrying about and concentrating on its scars. Today, we are going to focus on the good things in America."