The FBI recently pressured Apple into creating a special iPhone security override for them — and Apple very politely told them to screw off.
The TL;DR version is that the FBI is having trouble breaking into the iPhone formerly belonging to Syed Farook, one of the shooters involved in the tragic massacre in San Bernardino, California. Apple agreed to help ... but the FBI took this a step further and obtained a court order for Apple to provide a way to bypass several security features on the phone without erasing its data. Apple claims this would involve creating a new version of iOS (which some have dubbed "FBiOS") with a back door that has serious privacy and security implications.
It's not that Apple can't do what the FBI is asking of them; it's that they shouldn't. The company did cooperate by providing the data that was already in their possession. But they were less comfortable with the potential slippery slope of the FBI's override request and the precedent that kind of government overreach would establish for the future.