In a nutshell about the Declaration of Independence:
Colonists started a war by pissing off the French (known as the French and Indian War in the U.S., The 7 Years' War in any other reasonable country).
The English won, beat the French (and the Spanish, but they were just kinda jumping on the bandwagon and didn't really do much overall) soundly, took the French colonies in India and many of the ones in North America. The war bankrupted them, however.
Because the colonists were the ones who started the goddamn war, the English decided they would tax them more heavily than in the past.
Now the colonists had gotten used to England being so far away it didn't bother following up on what it was supposed to do, so these taxes came as a surprise. They refused to pay regardless, because what good are taxes for? (Also, they said that they didn't have a fair say and representation when it came to making the tax.)
The colonists sent a bunch of strongly-worded letters and petitions to the British, who reacted by sending troops over to America. Because there weren't enough British military bases, they would use peoples' homes as temporary barracks for soldiers.
Things got worse and worse (just read the text of the Declaration of Independence for the full list; it goes into considerable detail), and the colonists kept making more letters with more strong words, and the British weren't listening.
So, about a quarter of the colonists said that they were going to go off and make their own country where they don't need to pay taxes. Another quarter said that it belongs to England, and about half just didn't care, as long as they get to keep their farms.
We had a war, we were getting our asses kicked by a bankrupt England until the (also bankrupt) France decided to help us out with training and threatening war on England. England got scared and backed off, and we got our independence.
France, however, was now even MORE bankrupt, and decided that taxing the poor was the correct thing to do, which caused spiraling inflation and the loss of many heads. Literally.
They turned to us for help since they helped us when we were going through our revolution, and while a quarter thought that help was a good idea, another quarter thought it was a bad idea and half didn't care, so we didn't do it. Napoleon planned to get revenge on us for causing everything bad that ever happened to France, but a slave revolt in Haiti scared him off, and diminishing funds for his military made him sell all of his stuff in America to the U.S. and call it a day.
But I digress.
OWS isn't like the American revolution; I don't know where you got that idea from. If anything, it's actually a fair bit closer to the French revolution minus the violence. We aren't going through nearly the same number of stresses as we did under English rule; soldiers aren't being quartered in our homes and we aren't paying a tax on every single thing that can be put onto a piece of paper. And the paper itself.
We do suffer from spiraling inflation and a scapegoating of the upper class (justified or no). We also have peaceful revolutions throughout the world that are happening and we are drawing inspiration from.
But you don't see notable Libyan ambassadors sexing up the OWS camps and trying to persuade us toward revolution. We aren't under the rule of a totalitarian dictatorship (depending on who you talk to, however, that idea might change), we still have the freedom to say what we want, assemble peacefully, and in general do things that are very anti-government.
While it's true that you can certainly find elements of a French Revolution-esque society within the OWS camps, the ideas are not as prevalent or OBVIOUS as they were in Revolution-era France. We won't be storming military bases to arm ourselves against the police anytime soon. Not even 7-8 months.
IF conditions degrade at a steady rate, IF we get into a double-dip recession, IF 25%+ of Americans are unemployed, IF gas reaches $5 a gallon, IF politicians still don't make any movement toward progress AND the rich are still seen as profiting off of everything, THEN I would be worried. But that would be 5-6 years from now before we have a Bastille situation, and trust me, things would have to be pretty bad.
The government knows this too, and they'll listen to peaceful protests before it gets that far. Obama's a constitutional scholar, remember, and despite outward appearances, most of the important people in Washington do indeed know their history.
Note that "important" means in this case "Senate and above." The House can't be trusted with knowing (or doing) anything; even the Founders knew that.
Source: I'm a History major.