Apple has a patent that is designed to allow concerts to disable iphone cameras to I assume "avoid distractions" or whatever. That could be exploited by the police. Luckily apple never implemented that in iOS.
So its not inpossible.
A government could mandate a manufacturer to install a backdoor that disables the camera to be used (or even disable communications if they wanted) that activates when nearby police send a certain signal, then the phone receiving the signal would disable whatever fuctions it wanted. This would allow them to just kill protesters then falsely claim that the protesters were rioting and using violence.
Bruh.
The most powerful country in the world couldn't even do democracy better than a "Third World Country"
🤦♂️