I would have to say yes and they have probably calculated its successes and failures.
Frist would be if the police cannot control a situation. Then the national guard. One effective way of controlling the population is to shut down all communication. That means the Internet, radios, cell phones, etc.
The goal would be to pacify the citizenry before any major bloodshed.
They know that Americans are armed. But as individuals we have vulnerabilities such as food and water. They might try to wait a situation out. Might be a week, month, or year.
I am no expert but you can count on the government doing an analysis of such a situation.
The government can’t shut down the airwaves. Amateur radio and CB radio operators would pop up like mushrooms after a rainfall. The older the comms technology, the harder it is to silence it.
Guaranteed. There are people in government positions whose sole job is to develop contingency plans for everything conceivable.
Shutting down communication would explode every city.
Can’t pacify thirsty people without tying up resources. Cities are vulnerable to disruption of essential services. Multiply that by dozens of cities which ‘Stand With Hillary.’