Mayor London Breed said at a news conference attended by the police chief and other public safety personnel that she would introduce legislation to allow law enforcement real-time access to surveillance video in certain situations and to make it harder for people to sell stolen goods.

She also announced emergency intervention to improve safety in the Tenderloin, one of the poorest and most drug-infested neighborhoods in San Francisco, where parents have pleaded for protection from drug dealers and violent street behavior. The neighborhood contains several government buildings, including City Hall.

“What I’m proposing today, and what I will be proposing in the future will make a lot of people uncomfortable, and I don’t care,” said Breed, a Democrat. “We are past the point where what we see is even remotely acceptable.”