There are all sorts of problems with this mears, problems that a moment's thought would allow you to work out. And by " a moment's thought" I mean entertaining the possibility of seeing things without immediately assuming that the good old US of A and its honest citizens are always or even usually in the right when it comes to international affairs. You complain about a kind of ideological blind, a knee-jerk anti-Americanism. But you are always ready to give the US the benefit of the doubt- why is that, then, in the face of the overwhelming evidence? Any bells ringing? In the same way you accuse those who have a different take on Chavez of not living in Venezuela. But have YOU ever been there? So your point is?
The US and Latin America? You have to be joking when you suggest that US influence in the region is positive. What is the US's main goal down here? As ever, to turn a fast buck. "The business of America is business" and all that crap. And secondly, to make sure that no-one gets in the way of that simple goal. At this very moment FTAs are destroying local industries which do not have the benefit of the protectionism that initially allowed US industry to grow and still allows it to enjoy comparative advantage. Colombia's just signed one with the result that local medicine prices are going to go up dramatically. No surprise there: the US doesn't like generic drug production because the administration is there to serve the interests of the thieving corporate fucks who profit through the misery of others. And for decades US goals have generally been furthered by murderous proxies. Have you heard of Plan Colombia? Well, that's a lot of money for a particular group of murderous proxies known as the Colombian army. There ARE some social programmes associated with the PC, but they're largely window-dressing, whatever the good intentions of the people involved in them.
You mention Grenada, which was a kind of tragicomedy. But more tragic than funny for Grenadians, no? It's an absolutely shameful case of international bullying that is conveniently forgotten by those who refuse to understand US policy for what it is- blatant self-interest accompanied by naked aggression. But if you bothered to investigate the thinking of the neo-cons whose ideology is so important in the US right now then you'd realise that it's not just Condie "I'm Working for Whitey" Rice who thinks of "developing" countries as "the road-kill of history". It's explicit, so explicit it's obscene. Try reading Irving Kristol on gunboat diplomacy, for example.
More to the point you have the time line all wrong. Grenada was in 1983. But what about Panama? How many Panamian civilians did the US kill during the invasion in 1989? Each one of those deaths was a state sanctioned murder of foreign nationals- which doesn't matter because they don't count.
Back to Chávez, then. I have mixed feelings about him, not least because I don't think that the personalisation of politics is ever healthy. And yes, I do think there is a lot of automatic left support for him which romanticises his government. But whatever the pros and cons of the "quinta república" (and let's not forget the many pros) there is one thing I'm absolutely certain of, and that is that he's a lot more legitimate than Dubya. And I'm also sure that if the Venezuelan people wanted to remove him in the December elections there would be no problem at all. But they won't because he's the best option there is right now. As to the militias- well, they might be scary in a totalitarian state. They may also be a propaganda stunt. But given the US and the UK's disgraceful backing for a completely unjustified, illegitimate attempt by the old, discredited elite, to re-establish their control over the country (democracy having "failed"), could you blame Chavez for making sure that it's some form of democracy, however limited, that makes changes in the country and not a coup?
While we're on it, you could also do with thinking about what democracy might mean in the US. I wouldn't classify the US as a democracy right now as just getting to vote on some project dreamed up by a particular section of the elite every four years doesn't quite make the nut as far as I'm concerned. Democracy ought to be about shared decision making and accountability- but it's clearly not that in our so called western democracies is it? They are societies in which corporate scum bags who are accountable only to shareholders, and often not even to them, get to dictate policy while the politicians babble their insane lies.