I fear greatly for the false positives that will inevitably happen, and the mass oppression of society that could result from the natural instinct to avoid them. When every action even slightly against the norms of society at the time can be acted upon and countered, the chilling effect on freedom could be immense.

You had to live -- did live, from habit that became instinct -- in the assumption that every sound you made was overheard, and, except in darkness, every movement scrutinized. -George Orwell, 1984.