It took a while for the shooting to begin back then and there were many negotiations with the king and parliament over a period of years. Communications were not what they are today.
What’s going on today is a piecemiel dissection of our liberties but those are beginning to mount up.
Would a second declaration and a AmRev2 succeed? Hard to tell. The original revolution was not very widely supported throughout the actual war years. Whether it’s full implementation of obamacare and its taxes and death panels or the killing of coal and power production that brings us to it is still unknown but just those two alone will devastate a large part of the population and may be the triggering actions.
DOMA is not enough for most average citizens, regardless of their views on it. Shut down their heat or cooling or give them rolling power interruptions along with confiscating their assets by way of obamacare “taxes” giving them less or no care will have a real effect and it won’t just be the democrats who will be seen as needing removal; it will include most if not all of the current leaders of both parties.
King George did not have the NSA and DHS to quiet quell any dissenters.