Sorry, but that’s a far cry from “mass communication”. Also, back in those days, the citizens were armed and organized, and just waiting for a signal. Even if you could still send the same signals, there are no Minutemen on the other end waiting to take up arms with you.
And we are everywhere...
At the inception of the revolutionary war we were just a bunch of guys with guns. We became organized due to need. These days we are much better armed than our forefathers. We outnumber the aggressors in this little theory play by roughly 250 to 1. We know where they live, who their families are, where their children go to school, who they are "seeing" on the side, where they buy their food, where they go to counseling. We are their barbers and their butchers, their plumbers, their IT staff, their accountants, we are nameless and we are legion. They cannot possible "round us all up", they cannot possibly collect even a large percentage of arms in circulation and there is no effective method of stopping us from making more.
The only way we could possibly lose is to not fight and while that is a possibility it's not at this time a very likely one.