"I see two scenarios: we tax the rich, or the poor finally revolt."
If those are your two scenarios, you're not looking hard enough. The US is not South Africa or Haiti or some other state where there truly is an impoverished class. the poor in the US simply have less money than most. But they still enjoy a standard of living that would be considered very high by the rest of the world. And that standard of living is financed by the rich.
So your argument is sort of like saying that the poorest neighborhood in Beverly Hills is going to riot because they don't have as many nice tings as the richest neighborhood. Which is utterly ------- retarded.
And even if they did revolt, what's the desired end state. If you get rid of the rich, it's not going to increase the wealth creating potential of the poor. What it would do is force the poor to cover their fair share of the tax burden, meaning that they would ultimately be worse off without the poor than with. In fact the only positive outcome would be one where the rich were forced to fund the poor. Of course the whole problem with that scenario is that no one likes being a slave, rich or poor. And the poor, unable to take care of themselves, would then be wholly reliant on a class of slaves, who themselves might rebel. After all, the poor need them. They don't need the poor.
"You create a Socialist society."
Ties in nicely with the next comments regarding the military.
Do you know how you create a socialist society? At the end of the barrel of a gun. Because there aren't going to be many income earners who are going to willingly participate in a system where they create wealth that is immediately given to someone else. You need a mechanism that forces those income earners to keep earning income, even when it is not in their best interest to do so. Probably by giving them the choice of either continuing to work, or getting shot. And since some would probably choose death, you'd probably need to threaten their families as well. That's just how it is.
I can't envision a situation where the military would ever support some sort of socialist revolution.You would be hard pressed to find a military member who had anything nice to say about the Occupy movement. In fact it's very likely that the military (or military members) would fight in opposition to something like this. Even if it were a result of some sort of government ruling.
As for firing on US citizens, who knows. But I think it would have taken about five minutes on your average military base to round up dudes to crack skulls in Zarcotti Park.