A portion of the cameras promised last year to help combat crime in Oakland are finally up and running. The Oakland Police Department said the cameras have already helped catch criminals. NBC Bay Area’s Velena Jones explains how the cameras work and why some fear this is not the right approach. Watch her report in the video above. Oakland Sep 18 What are the giveaways for fans attending the last Oakland A's game at the Coliseum? Oakland Sep 18 Town Love: New business highlights Oakland's ‘heart and soul' Oakland Sep 13 Oakland youth start car wash business to get out of troubled path