I don't think the 2nd Amendment is the most important. I think it is in a tie with the 1st, and probably a couple of others. For those who think the second is more important, think about the big picture. If your first amendment rights are destroyed while you sit by complacently and clean your guns, then how will you coordinate anything to restore your rights? If there is no free press, how will you rally people together? You won't. You will be isolated, alone, and easy to defeat. You will not be able to recruit people to your side.
If it ever gets to the point that you are actually in need of defending your rights with force, it probably won't be done with guns for the most part.
You will be using IED, pipe bombs, car bombs, etc, just like the insurgents in Iraq. The idea of citizens with semi-auto M4geries standing up toe to toe against the US Army makes about as much sense for us as it does for the Iraqis. It would be a slaughter on an open battlefield, just as it was during our Revolution.
Finally, remember that just because you can see and feel your guns does not mean they are any more real than free speech. Gun owners got very riled up over the Assault Weapons Ban because they could not have flash hiders or bayonet lugs. The fact that no one has ever used their bayonet lugs doesnt matter. Gun Owners have for the most part sat by idly as the Campaign Finance Reform Law did more to restrict the First Amendment than the AWB did to restrict the second. Just because you can't see and touch "free speech" does not somehow make it less important.
The current Administration has placed restrictions on several of our guaranteed rights, but has curiously left the 2nd alone. The squeaky wheel gets the grease. Gunowners need to get squeaky about the other Nine amenments.