The Santa Ana Police Department is working on a far-reaching new initiative to address illegal street racing, an activity known to kill pedestrians and disrupt neighborhoods in its wake. The multipronged approach — which includes increased enforcement, social media campaigns, multiagency partnerships, ticketing and traffic engineering — comes after increased reports of racing and related actions, as well as a recent pedestrian fatality and the death of a prominent newspaper editor whose truck was hit by a BMW in a street race with another car. Police say impromptu street races can happen anywhere within a quarter-mile stretch. “Street takeovers” are…