According the to the Boston Globe:
The MBTA quietly provided special Orange Line trains for people exiting the FleetCenter on all four nights of the Democratic National Convention, opening the otherwise closed North Station so that some 3,200 delegates, journalists, and others with convention credentials could be whisked to Back Bay Station, free of charge.
Word of the special service did not sit well with T riders who have had to put up with baggage inspections and forced transfers to shuttle buses.
''It seems like they've overlooked the people of Boston and regular commuters," said Susan McLay, 23, of Billerica, who takes commuter rail and the Orange Line to the Massachusetts General Hospital Institute of Health Professions in Charlestown. North Station has been closed to everyone but the conventioneers, she said, which has caused major disruptions in daily routines.
''That doesn't smell very good to me," said Julianne Ture, an Orange Line rider who took the week off. ''The whole convention has been such a fiasco."