Nightwatch (or the thought police for non-B5 fans)

It seems the US has implemented a large data collection and mining project. Since the US government is gunho on this type of stuff the only solution I can think of is a massive misinformation campaign. You can't convince people to not participate since they love to tattle-tale, but you should be able to convince large numbers of people to contribute credible but false information making the database useless. It's the only option I can think of for the short term.