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Woman pleads for life on 911 call, police come 50 minutes later

The family of Dallas woman Deanna Cook is outraged it took police almost one hour to respond to her call for help, while she was being attacked allegedly by her ex-husband while on the phone with 911. Cook’s family discovered her body two days later. The family says her death exposes a larger problem – a broken emergency response system that fails to take domestic violence seriously, especially in minority neighborhoods. Kate Snow’s full report airs Friday, May 17 at 10pm/9CDT on NBC’s Rock Center with Brian Williams.