The militarization of law enforcement doesn't mean much, e.g. look at how they completely loose there shit in the face of one disturbed, not very clever or effective assassin like Christopher Dorner [ADDED: there's a lot of cargo culting here; giving 10 police officer M16s/M4s, SAWs and grenades does not magically turn them into an US Army infantry squad]. At the other extreme, we the people can completely swamp them in a matter of hours, but of course motivating us to do that would be quite a trick.
"Advanced weaponry" is of no use without the will to use it. As an extreme example, a few nukes could terminate ISIS with extreme prejudice and collateral damage, but I don't know of any serious "hawk" even suggesting [WAS: advocating] their use.
I have grave doubts about your closing point, "a last resort if inequality continues at this rate"; is that so bad it's worth killing millions of people to merely attempt to fix it, with many and perhaps the most likely end results further emphasizing it? For that matter, who/what groups are going to start pulling triggers?
Very good point. Air support of any kind would be unhelpful in a revolution because the government would, understandably, be reluctant to bomb the hell out of its own population/economic centers.
The "swamping" concept I was referring to was something of a thought experiment, e.g. imagine an out of science fiction effective speech broadcast to enough people that it doesn't matter that the police know "the people" are coming right now.
As for your general point, people who think about this sort of thing often focus on the old techniques like cells, one time pads, etc., subverting those listening in, etc. etc. Plus I'd add, just how effective do you really think governments are, especially against "non-crazy" people. That's the real danger I see, that "middle class" or thereabouts people like me get upset enough to take up arms, instead of the usual suspects like the Weather Underground. Note our "revolutionary" Founding Fathers, especially apropos this day after the anniversary of Declaration of Independence.
And there's a relatively new "leaderless resistance" concept where individuals not in close communications nonetheless take effective action. Again, see how "effective" for some value of effective Christoper Dorner, working alone, was. One man, or a small group, can be dreadfully effective nowadays.
Another poster already covered the heavily armed citizenry so I will defer on that one, except maybe to say that I don't find it alarming.
Let's set aside the technical issues involving revolution; weapons, tactics, whatever. Let's just look at the basic philosophical points and high-level problems.
What exactly would be revolted against?
Is one revolting against shitty local/state/federal government that they themselves (statistically) continued to vote in, either directly or through inaction?
Is one revolting against poor treatments of minorities, especially since they've (statistically) shown themselves incapable of interacting with people whose political views they disagree with (much less people with obvious differences in skin color, economic class, or some harder-to-overlook uniqueness)?
Is one revolting against the centralization of capital? This, despite the fact that that person is (stastically) unlikely to have any of the basic but essential skills required to grow food, mend equipment, slaughter animals, write books, orate effectively, organize teams, balance checkbooks, run businesses, or write programs?
Is one revolting against the loss of control one has over their own affairs? A loss of control literally begged for every time they've let slide a "think of the children" argument or repeated some other form of fear mongering?
America today has the government and economic distribution of wealth that it deserves.
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The only revolt that really makes sense is one purely out of spite, pure juvenile hatred and rage and desire to see the nice things these folks have turn to ash because "fuck you that's why". Anything more highbrow is just trying to dress things up.
Not necessarily. The police are vastly outnumbered. Military technology only gets you so far (see: General Custer, Vietnam, Somalia, Afghanistan, Iraq part II) and both military and police might find themselves disobeying orders or even switching sides.
Even on foreign military missions, we (the US) can certainly take over territory quickly, such as the invasion of Iraq, but we aren't willing (or possibly able) to be despotic all-powerful overlords after "bringing freedom" didn't end the way we wanted.
That aside, a situation has to get really bad before revolution, and all its associated costs and bloodshed, would be a net positive. And that's for successful revolution, historically the results have been more spotty.
The reason we don't have armed revolutions is that we have a better mechanism for replacing the government and expressing political desires.