In retrospect I think we were both talking of different scales initially. I expect short range (segments of a city) blackouts and tower spoofs to become the norm in response to civil unrest events. These are low-cost actions since the rest of the city and all hard infrastructure is untouched.
Scaling up to a city is certainly a much larger challenge that we haven't seen much of, though I think it's a reasonable expectation that we'll encounter it within the next 15-25 years, which is why I softballed a few ideas in that direction.
In terms of drones, I was speaking mostly preprogrammed flights with no ground link required, at least not beyond brief initial launch and terminal control. This would be delivering a HDD/SSD as payload -- a modern-day sneakernet when all other lower latency avenues of sufficient bandwidth are unavailable, which is a pretty big step away from anything we've seen.>>3724
We've seen tower spoofing and/or jamming at protests in the last year in the US, and I believe it was reported during Euromaidan, though I'm not positive on that one.
Granted, this is mostly first-world countries, and in these examples the scope is pretty localized. If you start looking at metro-scale events, then yeah, that's a different story with a higher cost (for the moment).