(CNN) - Some residents of Oakland, California, fear their community is creating a monster.
The city calls it the Domain Awareness Center, but opponents call it a "spy machine" and a potential "tool of injustice."
Known as "the DAC," it's a proposed central surveillance facility where authorities can monitor the Port of Oakland and the city's airport to protect against potential terrorism.
But the broader issue of centralized data surveillance poses serious privacy questions for millions of people in cities around the globe.
In March, more than 100 worried Oakland residents waited past midnight to complain about it during a City Council meeting. Standing at the mic, Maya Shweiky, a self-described public school teacher and Muslim, warned lawmakers their proposal would be used to "discriminate against minorities and perpetuate racial, religious and political profiling."
While the council voted on the proposal, rowdy protesters began chanting, "No! No! No! No!"
Council members have proposed expanding the DAC to add live, 24/7 data streams from closed circuit traffic cameras, police license plate readers, gunshot detectors and other sources from all over the entire city of Oakland.