How Much Invasion of Privacy is Too Much?

[LibDemAlways]

If you travel by air in the US, the government has the right to open your suitcase in secret and inspect its contents - even if those contents have been pre-determined by an x-ray and explosives testing to be innocuous. Americans have pretty much accepted this breach of their privacy in the name of "security." Now that this is the accepted norm, where will it end? Will the government next mandate that we leave our homes unlocked so that government representatives can enter at will and inspect our belongings? Will we be required to affix devices to our cars or persons so that the government can moniter our whereabouts at all times? How much more of our freedom and privacy are we willing to part with before we declare "enough's enough"? Are we already too far gone? Thoughts?