If they hadn't made this judgment, would there be anything stopping you or I from legally attaching GPS devices to government official's cars and recording their movements?
They should overturn the ruling and make it fair game for anyone to track anyone else. Then we can make google maps mashups for tracking each other and government officials.
While it's a fun turn-the-tables idea, because government is so much bigger, with more power and resources, this would still be incredibly unequal. You might be able to track a dozen government officials; the FBI could track every member of a political minority group (eg. the persecution of MLK).
They should overturn the ruling and make it fair game for anyone to track anyone else. Then we can make google maps mashups for tracking each other and government officials.
--edit-- </sarcasm>