What battle? You either give them info they are entitled to or you play along and tell them things that are none of their business. Jeez, it is no wonder that this country is turning into a socialist hellhole when the "conservatives" let the government intimidate you to the point that you give up information that you don't have to.
I can just see refusing to answer the questions and having some Census Progressives stop by my house while I am carrying (I always carry). I would probably be charged with threatening them for merely having the gun on my hip.
If you think I am going to throw my life away for some questions which the govt probably already has the answers to, think again.