Deadly assets

In Philadelphia -- suffering among the country's highest murder rates -- the tension between the Philadelphia Police Department and its Citizens Oversight Committee has long been reaching a boiling point. That turmoil turns from bad to worse shortly after the committee begins targeting police shootings -- especially those of twenty-seven-year-old Homicide Sergeant Matt Payne, the "Wyatt Earp of the Main Line"--And then the committee's combative leader is found shot dead point-blank on the front porch of his run-down Philly row house. As chanting protesters fill the streets, the city threatens…