In that case, if people think like that, [that "U.S. tyranny is just better organized and manipulated."]....why aren't people leaving the USA in droves?
Probably because in many other countries tyranny is not as well organized or manipulated. It's very difficult to live in those other types of tyrannies. Also because most types of tyranny in this country is focused externally on countries that might be detrimental to our economic way of life, or at least the economic "way of life" for a few powerbrokers in this country.
What if you picked a country to run to that fell afoul of the economic potential of the United States? The United States might just have to send in CIA terrorists as WE ADMIT WE DID in Central America, for example, to topple the government or create/provide an excuse to bully that government. If possible, of course, we will fund their own ready-made terrorists (which we will call freedom fighters for as long as they are working indirectly for our longer-range economic interests).
In any case, our own country's tyranny is usually protecting us. When this country's tyranny has been pointed internally, it has been primarily been focused on poorer classes and races (blacks, latino, native american) who are less mobile. Also, we don't gas our own people, even though we have been known to gas other people like in Bhopal, India for example, but it was an accident. U.S. tyrants have the largest stockpile of chemical weapons in the world. No one in power in this country would dare speak out against our having chemical weapons, our stockpiling of chemical weapons, our creation of new chemical weapons, or our need to sell these chemical weapons to other tyrants like Saddam. Funny how this country's leaders never even spoke out against Iraq's use of chemical weapons for over a decade.
The biggest problem with your question is that it assumes that if people aren't fleeing in droves from a tyrant -- that this somehow proves that those in power are not tyrants. Using your logic, millions of non-Kurdish Iraqi people do not think Saddam is a tyrant. Do you really believe Saddam is not a tyrant?
People are not as free as you might believe. If you have no money and no job and are tied to a specific economic, social or family system for your livelihood then could you just up and move to another country for ANY reason. The sanctions enforced by the tyranny of the U.S. on Iraq has resulted in the deaths of about 1,500,000 Iraqis. (Those are U.S. estimates.) What kind of tyrant kills half a million children in a country through "biological warfare" (enforced starvation)? Yet that is exactly what the United States did INSTEAD of taking out Saddam for humanitarian/human rights reasons which we have had reason to do for nearly two decades. Why didn't we recommend a coalition to take him out before we tried crippling the country first. Is it because we are a tyrant but not a brave tyrant? Why did the United States tacitly approve of this tyrant's handling of his own people? Why did we approve of his weapons? Why did we sell him his weapons?
It's because most nations that can, become as tyrannical as they can get away with. Perhaps that's unfair, and some nations actually don't have a desire to rape and pillage other nations and their resources in the way that the USA and several European and Asian countries have become famous for over the last 500 years especially. Some nations finally get more sophisticated about it. After a few hundred years we finally stop killing our own inhabitants through civil war, near genocide against native americans, suppression of human rights against various unempowered races. When we the people of the US have enough power we take it out against other nations. We aren't the kind of tyrants that need to use the same tactics as most other nations. Sometimes we act more like a mafia boss that just wants a piece of the economic action wherever we can get it. Sometimes we act like a high-school bully that can just provoke and provoke and provoke the weak little 1st graders, and hope one finally lashes back at us so we can pound them into the dust. (I believe we used those exact words in Afghanistan.) This month, it's "Operation Iraqi Beat'em" into the sand.
Sorry I picked your thread to rant in. I can also write a very pro-USA thread, but I thought I'd just try to answer the question about how this country could be a tyrant even if the people weren't leaving in droves.