article_snippet: A Philadelphia police officer fatally shot while trying to stop
article_snippet: The slain officer was hit multiple times but 'fought til the very end,' Philadelphia Police Department's Captain James Clark said .
article_snippet: People have been holding vigils and releasing white balloons in the officer's neighborhood.
article_snippet: City council on Thursday held a moment of silence in honor of Wilson, who came from a family of police officers and had been on the force for eight years.
article_snippet: Philadelphia Mayor Michael Nutter said during the ceremony that the past nine years, when ten Philadelphia officers have been killed in the line of duty, have been particularly hard.