[tinio]

Additional details on the matter are reported here:

http://www.baycitizen.org/bart-police-shooting/story/bart-ce...

with BART saying they were within their legal right to shut down the cell service. However, the Electronic Frontier Foundation had this to say:

“It’s outrageous that the authorities would resort to the same tactics of the repressive Mubarak regime,” said Kevin Bankston, a lawyer for the Electronic Frontier Foundation. “The fact that it was motivated by a desire to stifle free speech raises serious First Amendment problems.”