Bay Area Rapid Transit (BART) Police prepare to close the Civic Center subway station as a BART train passes by in San Francisco, California, USA, on 22 August 2011. Two weeks ago BART disconnected its cellular transmitters and networks to quell planned demonstrations and protest at certain downtown stations. BART said it was due to safety precautions. BART did not disconnect its services today, but closed the Civic Center station until further notice. EPA/JOHN G. MABANGLO
Bay Area Rapid Transit (BART) Police patrol the platform at the Civic Center subway station in San Francisco, California, USA, on 22 August 2011. Two weeks ago BART disconnected its cellular transmitters and networks to quell planned demonstrations and protest at certain downtown stations. BART said it was due to safety precautions. BART did not disconnect its services today, but closed the Civic Center station until further notice. EPA/JOHN G. MABANGLO
Bay Area Rapid Transit (BART) Police patrol the platform at the Civic Center subway station in San Francisco, California, USA, on 22 August 2011. Two weeks ago BART disconnected its cellular transmitters and networks to quell planned demonstrations and protest at certain downtown stations. BART said it was due to safety precautions. BART did not disconnect its services today, but closed the Civic Center station until further notice. EPA/JOHN G. MABANGLO
Bay Area Rapid Transit (BART) Police patrol the platform at the Civic Center subway station in San Francisco, California, USA, on 22 August 2011. Two weeks ago BART disconnected its cellular transmitters and networks to quell planned demonstrations and protest at certain downtown stations. BART said it was due to safety precautions. BART did not disconnect its services today, but closed the Civic Center station until further notice. EPA/JOHN G. MABANGLO
Bay Area Rapid Transit (BART) Police arrest and remove a demonstrator from the Civic Center subway station in San Francisco, California, USA, on 22 August 2011. Two weeks ago BART disconnected its cellular transmitters and networks to quell planned demonstrations and protest at certain downtown stations. BART said it was due to safety precautions. BART did not disconnect its services today, but closed the Civic Center station until further notice. EPA/JOHN G. MABANGLO
Bay Area Rapid Transit (BART) Police arrest and remove a demonstrator from the Civic Center subway station in San Francisco, California, USA, on 22 August 2011. Two weeks ago BART disconnected its cellular transmitters and networks to quell planned demonstrations and protest at certain downtown stations. BART said it was due to safety precautions. BART did not disconnect its services today, but closed the Civic Center station until further notice. EPA/JOHN G. MABANGLO
Bay Area Rapid Transit (BART) Police arrest and remove a demonstrator from the Civic Center subway station in San Francisco, California, USA, on 22 August 2011. Two weeks ago BART disconnected its cellular transmitters and networks to quell planned demonstrations and protest at certain downtown stations. BART said it was due to safety precautions. BART did not disconnect its services today, but closed the Civic Center station until further notice. EPA/JOHN G. MABANGLO
Bay Area Rapid Transit (BART) Police arrest and remove a demonstrator from the Civic Center subway station in San Francisco, California, USA, on 22 August 2011. Two weeks ago BART disconnected its cellular transmitters and networks to quell planned demonstrations and protest at certain downtown stations. BART said it was due to safety precautions. BART did not disconnect its services today, but closed the Civic Center station until further notice. EPA/JOHN G. MABANGLO
Bay Area Rapid Transit (BART) Police arrest and remove a demonstrator from the Civic Center subway station in San Francisco, California, USA, on 22 August 2011. Two weeks ago BART disconnected its cellular transmitters and networks to quell planned demonstrations and protest at certain downtown stations. BART said it was due to safety precautions. BART did not disconnect its services today, but closed the Civic Center station until further notice. EPA/JOHN G. MABANGLO
