For all the worry over the upcoming verdict in the trial of the former BART police officer who killed Oscar Grant, there is just as much determination in Oakland to make sure the reaction remains peaceful. From youth clubs and churches to City Hall and even groups planning protests, many people are working hard to keep the inevitable demonstrations from getting out of hand the way they did Jan. 7, 2009. That evening, rioters damaged scores of businesses and torched several cars in the downtown business district in reaction to the shooting of Grant, who was black, six days earlier...