Recent controversy over NSA revelations sent me reaching to my bookshelf for David Brin's 1998 work, The Transparent Society: Will Technology Force Us to Choose Between Privacy and Freedom? Re-reading it made me realize that Brin articulated more than just an unusual approach for addressing the issue of surveillance technology. He offers a perspective on the relationship of citizens and the state which challenges conventional libertarian thinking.
In brief, Brin sees liberty as flourishing not when the state is weak, but when the state is accountable. Accountability in turn requires that government processes must be open, and that citizens must be vigilant and effective in monitoring and challenging the actions of public officials.