Dallas at the Tipping Point IDA WILLINGHAM: The guardian of 10 children explores resources offered by DISD, which gets sporadic help from the city. BOB CURRY: He's on the lookout for code violations, but he's also looking out for the communities he serves. HECTOR ROA: The Dallas police officer worries about a department that must stretch its workforce. BRAD WEST: The South Dallas businessman wonders why the city's support for his endeavor stops with basic services.

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