Measure would bar NSA from collecting Americans’ communications without a warrant.
A plan to register commercial surveillance cameras is already seeing pushback from Berkeley residents.
Imagine Google Earth with a rewind button and the ability to play back movements of people and cars.
Profusion of new devices lets law enforcement gather data about personal lives of law-abiding citizens.
Local police can track people and collect data in real time with this controversial technology.
After rising chorus of privacy concerns, system will cover only airport and Port of Oakland property.
Protest part of a worldwide day of events organized by the S.F.-based Electronic Frontier Foundation.
Backers say plan, five years in making, will fight crime but opponents fear it could be used for spying.