Ubiquiti was linked here a little while ago http://www.ubnt.com/broadband Their point-to-point wireless can travel a fair distance, but I don't know how resilient it can be. Something similar that is resistant to jamming (possibly frequency hopping, spread-spectrum) might be what's needed to bridge the gap to the wider internet.
Of course, any emanating signal strong enough may attract fire as well, so local communication may be limited to mesh networks similar to what's being used now during the Hong Kong protests.
Of course, any emanating signal strong enough may attract fire as well, so local communication may be limited to mesh networks similar to what's being used now during the Hong Kong protests.