I would argue that the great political shifts, our Revolution, our civil war, Germany under Hitler, the Russian October revolution (the rise of Lenin) the USSR under Stalin, the collapse of the Soviet Union, the US under Bush, while the warning signs were evident to anyone paying even a little attention, were moresoe the results of sudden explosions; the coming together of various sparks and pressures and 'fuels' that had been happening, individually, for some time but never in the right combination to actually explode. An internal combustion engine that has spark and fuel is nothing without air. Air and fuel are nothing without spark and so forth.
So, while we've been increasingly ignoring the constitution, for the most part, for some time now with the occasional Heller thrown in to instill some sort of vague trust that all will be well, we have, mostly, been ignoring the document that is the foundation, the thread, hell, the straight jacket that holds us together and, coupled with the extra constitutional spending, growth of government, (which is the textbook definition of how to get to tyranny), decay inducing social practices and so forth, we may well be approaching one of the explosions that many will say "How'd that happen?" when they really mean to say "I knew we were doing wrong, I just hoped it would all work out."
That is the lament of those who did not want Lenin or Stalin or Hitler or our revolution or our civil war or Bush (what he actually did) or Obama.
The other side of that coin is that there very much were/are those who WANTED Lenin and Stalin and Hitler and split from England and violent end of slavery and Bush the 'reluctant socialist and now Obama, thew vigorous socialist.
So, explosion isn't always bad from the American mind and viewpoint. However, what we're experiencing now is ominous; the gathering of the various storm clouds that tend to lead to explosion.
And we're not talking about explosions to free slaves or breaking from a monarch or even defeating an foreign enemy. We're talking about the practical end of life, liberty and the pursuit of happiness as individual, guaranteed rights.