Government pushed Apple to act as long before San Bernardino

[anotherone]

@xeni

Bratton … held up a phone that he said was used by an associate of a man who shot and wounded two police officers in the Bronx recently.
“Despite having a court order, we cannot access this iPhone,” Mr. Bratton said. “Just one example, a very significant example in which two of my officers were shot, that impeding that case going forward is our inability to get into this device.”

Why is that case not going forward?