HOW LONG TILL THE GOVERNMENT SHOOTS AT US: OKLAHOMA CITY REDUX

Seeing all the protests in the ME and the fact that some governments over there are firing on their citizens, it got me to thinking about how long it would be until that sort of thing happens over here.  We do have a precedent you know.  It was called, Kent State.  So there goes the excuse that it can't happen.  
Sometimes I get to wondering if McVeigh and Koresh might have been on to something.  Not condoning their actions but, the lack of trust they had in the government.  That for sure seems to be spreading.  The only thing keeping more of it from happening is that most of those  protesting (like folks in the Tea Party) are decent, law abiding citizens.  With the rate and level of anger going on in America right now, we are lucky there haven't been a dozen Oklahoma Cities.