Scoff at your own peril. Keep in mind, the rules of engagement in Iraq were tighter in Iraq than the cops here are constrained by. "officer safety" hides a lot of sins. And if you think americans won't slaughter americans, Lincoln killed 260,000 southerners and more than a couple northerners. He got a monument. You think that 3% is going to get treated any better he treated the south? You think that big homeland security apparatus was built to stop middle easterners from taking over DC and Manhattan? If King George had that kind of power at his disposal we'd all be standing for Rule, Britannia at baseball games.
Stop trying to sell your paranoid hysterics.
You're delusional if you think the American military is going to execute unrestrained warfare on our own people. Not even Obama has the cojones to issue such orders - and I can guarantee you he'd likely end up in irons if he even tried it.