Metro experiences insane crowds for 'Sanity' rally "But with long lines, packed trains and frustrated riders throughout the Metro system Saturday, why did it seem like the transit agency wasn't prepared for those Comedy Central rallies? It has a lot to do with the actual size of the crowd on the National Mall. 'We were told to expect a crowd about the size of the Glenn Beck rally,' Metro spokesperson Steven Taubenkibel tells WTOP. 'At the most 100,000 people.'"