For example: we can seek to make it illegal for certain information to be tracked; we can require that any information collected be disclosed to the individual at risk of being tracked; we can expand fourth-amendment protections explicitly, forcing a warrant to be issued to collect any of the information made available through these systems, even if the data is stored on a corporate server (doing away with national security letters and administrative subpoenas, and prohibiting disclosure without a warrant); and we can impose criminal penalties on government and corporate officials that violate these rights.
And more: we can make exposure of all but the most sensitive government "secrets" mandatory by law, rather than relying on legally questionable whistle-blowing for disclosures; we can ensure that encryption technologies (and other self-protection techniques) always remain legal, and remove any requirement that backdoors be added to new communication technology; we can work to decentralize corporate power in telecom by aggressively enforcing anti-trust laws; we can improve transparency and oversight of telecom services by explicitly encouraging that high-speed data service be provided as a local public utility.
And we can reduce the incentive that exists at every level of law enforcement to undermine privacy and civil liberties (and in turn further centralize power) by making fewer things illegal--most importantly, drugs.