Ultimately I think we agree more than we disagree; I'm mainly arguing that the importance of guns in opposing tyranny exists but is significantly overstated.
> Look at how effective—or ineffective—powerful western armies were fighting comparatively poorly armed Afghan and Iraqi rebels. For the most part, these were people with relatively little training and practice, small arms, and loose organization and yet they've managed styme the west's greatest powers for nearly 2 decades. They're better armed than your typical dooms-day prepper, but not by much (and those same doomsday people argue they should be able to horde mortars and RPGs if they want to). If we took the most extreme 'weapons-rights' view I think it is reasonable to think a few million angry Americans could oppose a president like Trump ordering the US military to enforce some sort of tyranny. We've seen that kind of thing have great effect in recent history and all the way back to the first and second world wars where armed citizens were able to take bake their cities (Warsaw) and mobilize into effective resistance movements.
A few things about this:
1. It's worth noting that every single one of the guns being used by the resistance in Iraq is illegal. If anything, this isn't an argument that gun rights are important, it's an argument that gun laws are irrelevant.
2. It's also worth noting that your best examples here had fairly limited success. The "tyrants" in Iraq have control of the economic resources of the country, which is arguably their goal.
3. I'd argue that the limited successes of using guns to resist tyrants were due to a group united around a shared cause, not guns. Each of the successes of guns you mentioned could be attributed to this. The most effective resistance during WW2 wasn't even gun-related: it was the vast underground that smuggled soldiers and Jews.
> Can you imagine the Khmer Rouge making much progress in Texas or Arizona?
I get your general point, but this is a bad example: the Khmer Rouge was a fairly populist movement. Pol Pot's army was mostly uneducated monarchist peasants who didn't understand communism. A populist leader leading a bunch of people in Texas or Arizona to commit genocide is totally imaginable. But in that case the people with the guns doing the tyranny so I get that this isn't your intent. :)
> Some people don't think that's okay: they see the cost of policing in America, where police (rightly?) assume everyone is armed and angry and the police are quick to violence and say "there is nothing worth this!" There are people who will point at the rates of violent crime and say "even if a gun ban won't help, it certainly can't hurt." and they'll hear stories of children killing themselves or their parents 'accidentally' and say "even so-called responsible gun owners can't be trusted not to put themselves and others in danger through negligence."
> I understand those positions, I'm even sympathetic to them. At the same time, I don't think it's too much to ask that those of us who think that maybe the American relationship with firearms could use some changes at least try to consider the arguments, rather than trotting out some "lone man with AR-15 destroys US Navy thereby defending freedom of everyone from Trump's goon army" fantasy to poke fun at.
In fairness, that fantasy isn't a straw man: there are plenty of people who totally believe that.
That said, I do have a nuanced opinion on this. My ultimate position is that taking someone's gun and jailing them when they have never killed anyone with it is equivalent to convicting them of a crime because they might commit it--government needs very good reason to restrict the rights of individuals, in my opinion. But I also don't think that infringing the right to gun ownership is as damaging to society as infringing the right to, say, free speech, or privacy: plenty of people worldwide live quite happily without gun rights. I am sympathetic to the gun nuts, it's just not an important enough issue to me to affect how I'd vote in most cases.