Closing down a free press or instituting a state religion or other scenarios are equally important.
I generally assume that if we have guns we will have freedom of the press. It is hard to stop an armed person from speaking. I think it is inherent that the second amendment has to be weakened before the first can be weakened, and the second destroyed before the first can be destroyed.
What I was more thinking was:
Is there an amount of tax you would go to war rather than pay?
What if emigration is limited?
What if there are curfews?
Roadblocks where they check papers?
National fingerprint/DNA database?
We invade Iran?
Unemployment reaches 40%?
Voting is limited to tax payers?