Violent unrest continued for a second night in Philadelphia, following the police-involved shooting of Walter Wallace Jr.
Police say a crowd of nearly 1,000 looted stores and clashed with police in the city's Port Richmond neighborhood. PA Gov. Tom Wolf has deployed several hundred National Guard troops to the city.
The 27-year-old Wallace was wielding a knife when he was fatally shot by police. His family say Wallace was not posing an imminent threat and suffered mental health issues.
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