Having the internet shut down for the local population? I don't see it happening though as I wrote in an earlier thread I think it would be trivial and I'm sure they have a playbook on exactly how to do it that gets kept up-to-date, 'just in case'. But I think even the government does not have a clue as to what circumstances would prompt them to trigger this based on the current state of affairs. I just think that they find it hard to live with the idea that if TSHTF that they have something that might potentially be hard to control. Think of it as a control issue, not something with immediate applicability. A kill switch is a pretty blunt instrument of control, I'm sure the powers that be can come up with more subtle ways of dealing with issues like that.
Americans are no longer capable of revolution, this goes for any country in the world where the standard of living is high enough and people are for the most part happy with their lives including Western Europe and Australia. There simply isn't enough reason to do it, not enough people with nothing left to lose. There are simply no issues important enough to people any more to get out of their comfy chairs and go on to the streets. Witness what happened in France with the civil unrest there a few years ago, it was the kids with nothing left to lose that vented their anger, but they were (and continue to be) only a small fraction of the total population.
If a dictator should come to power (which you can never really rule out, even in a democracy) then that may change but it won't change overnight. It took 30 years for Egypt to get to that stage, it took more than 40 years in the former East Block countries.
Revolutions happen when the pot boils over, it has to be on the fire for a long long time gathering pressure and heat before that happens.
Ironically, if a kill switch were implemented and triggered the masses no longer having access to facebook and entertainment might be just enough reason for them to get out on the streets.