Note I am presuming the NSA can obtain the records from your ISP to ascertain it was you on shared IP address and not another user of the same ISP.
It is irrelevant.
They do not gain the popular acceptance to collect information and enforce stuff based on it on such a high level without a civil war. And if you are not careful, they will round you up in the early stage, just as they did in Russia starting 1917 (see, 100 years!). So they either have the technology but not the means to legally use it against you, and you are safe. Or there is a war and you are dead. Or you move away and don't care shit.
Sorry to bother the other readers but it really gets on my nerves that an intelligent guy bothers himself with the government so much. It is their job to bother you, not yours to bother yourself with them.
The battle is not technical (although it helps). If the aim is that people forsake government, it is accomplished by forsaking government, not by developing stuff while caring about government.