We can knock out power, make leaving the house a dangerous mission, stop trucks... The information age works both ways when obamaphones win votes. This society has become a soft, exposed shell that doesn't represent what we were even 40 years ago. That can work both ways.
Think about this - Obama locks down, pulls the plug on the internet - takes control of who can and who can't use cell phones - or just pulls the plug on most communication, except, of course - his conspirators in the national broadcast media. He rounds up known conservatives, locks them up, declares martial law, demands total evacuations of large tracts of homes - locks down large parts of major cities, and arrests anyone who opposes his actions in any way.
Civil war breaks out, gasoline and food can't be delivered or bought - you need government clearance to go anywhere. Tens of thousands are arrested and put in camps.
The Russians disarmed tens of millions - then exterminated the majority. Can't happen here? I fear it easily can.