during a pro- michael-brown protest on "black friday," a police mobini known as "stingray," aly d in on the cellphone signal of a protest organizer, to get information about the protesters' intended movements. >> expanded online crime reporting. it can also report certain crimes from any way connected devices. cents images will be posted to encourage people to submit tips about the case. also improvements to tip reporting. you can even register your bike using an online web form. >>an off-duty chicago police sergeant shot and killed a man, who shot a customer at a r. it happened inside the "blackthorn pub" last night, on the southwest side. police say a man shot another man during a fight. the sergeant saw it happen, announced that he is an officer then shot the gunman when he refused to drop his weapon. he was pronounced dead at the scene his naas el the other man was taken to the ho critical ce notion. hurt. a federal drug enforcement agent was struck and injured by a runaway driver in the ashburn police made a traffic stop at 82- nd and kedzie, on a tip that a man was transporting