I could see one problem it could solve: donating to organizations that governments find "undesirable", like say Wikileaks, Manning/Snowden defense fund, or even the EFF, and then would take secret (or even more direct ones) actions against me (IRS audit, no-fly list, etc).
http://zerocash-project.org/q_and_a#what-is-bitcoins-privacy...
I could see one problem it could solve: donating to organizations that governments find "undesirable", like say Wikileaks, Manning/Snowden defense fund, or even the EFF, and then would take secret (or even more direct ones) actions against me (IRS audit, no-fly list, etc).