Civil rights groups say San Francisco police used security cameras to spy on demonstrators

Civil rights groups have gone to court in their effort to stop San Francisco police from using private security cameras.

The ACLU, the Electronic Frontier Foundation and other groups filed a brief in a federal appeals court on Monday, claiming that San Francisco police two years ago used a network of 300 security cameras in Union Square to spy on demonstrators who were protesting the police killing of George Floyd in Minnesota.

Recently, a lower court ruled in favor of the police and their use of security cameras.