Apple has a patent that would let police or others turn off mobile cameras and wireless communication.
I am not a constitutional scholar, but don't we have a right to record the acts of police in public places? To capture images like these:
The photos show police using dogs and fire hoses during civil rights demonstrations in Birmingham, beating Rodney King, killing of Kelly Thomas and using pepper spray at Occupy Wall Street.
While the patent does use "covert police or government operations" as an example of an application, it also mentions legitimate applications, for example, stopping cameras in a locker room or other place where one has a reasonable expectation of privacy.
As is the case with many technologies, we should control its use, not its existence.