American public opinion is for prosecuting Snowden. This can be because they are un-informed or have a different value set from the mean of HN. If the former, how can we educate enough people to form a critical majority in favour of privacy reform?

If the latter, the process is slower and more complicated. A starting point would be writing and paying visits to decision makers. My impression has been that the lack of communication from U.S. citizens to D.C. has left decision makers with the impression that this is, at most, a foreign relations problem.

Not all elites are in D.C., mind you. Speak with influential and high profile individuals you know. Encourage them to bring this up in the media or at the next conference they are at.

Sound difficult? Convincing people to change the status quo should be. Rioting to short-circuit this process is the equivalent of dialectical violence. Less charitably, it is the making of noise and commotion in the hope that someone else will pick up the baton and do the leg-work for you.