Ok political brain.
Say our passion to change our Government lead to 1 person shooting at the Government. Say the Government shoots 3 more who were shooting at them to protect that person. Math goes on and the people are shooting at Government. The Government decides to use it's force on it's people. The force kills many.
Then the UN decides the USA shouldn't be killing it's own people and there are MANY nations that attack us for trying to strong arm them for too long, and see this as a window to strong arm back......
I know most of you don't know about Foreign Policy but this is accurate. Or maybe you can explain our moves to help rebels in other Countries and even bombing leaders that were never proven guilty.
Russia and the UN decide that we shouldn't be killing our Citizens.
Another dimwitted leftist who thinks AmeriKa is already a third world country; not to worry, once Obama's term ends we can get back to being first world again. Obama's desperate attempt to drag us down to third world status has been noted however.

P.S. US troops will not fire on their own families and citizens; that is the most moronic assumption one can imagine but par for someone who is epically stupid.