I believe that it is in the interest of all bitcoin users to keep bitcoin free from government influence.
I propose to add a blacklist of all addresses that are associated with government, so that no one can send bitcoin to or retrieve them from the blacklisted addresses. The bitcoin miners and clients should refuse to validate transactions containing a blacklisted address.
That will make bitcoin taxation harder if not impossible, and will make it cost prohibitive to seize and thus regulate bitcoin.
Every bitcoin client should be free to make a custom blacklist or download one from the internet.