the California state legislature to create an oversight committee with an Independent Auditor position, and Governor Arnold Schwarzenegger who signed the bill into law. Charles Hill In 2011, a mentally ill homeless man, Charles Blair Hill, assaulted two officers with weapons at the Civic Center / UN Plaza station in San Francisco. As a result, he was shot by BART police. The department reported that Hill was drunk and armed with two knives and a broken bottle. Approximately twenty-three seconds after arriving on scene, the officers fired three rounds, striking Hill in the chest and killing him. BART Police chief Kenton Rainey stated lethal force was appropriate. The shooting of Charles Hill led to a non-violent but disruptive demonstration by approximately seventy-five protesters inside the Civic Center and 16th Street Stations on July 11. Demonstrators departing the 16th St Mission station returned downtown on Mission St, blocking traffic and engaging in acts of vandalism en route. One citizen was arrested for intoxication. Sahleem Tindle Officer Joseph Mateu shot and killed Sahleem Tindle in January 2018. Officer Mateu had heard shots, and ran to the scene where two men were fighting over a gun. He intervened, firing into Tindle's back three times. The shooting resulted in a civil rights lawsuit against BART. Prosecutors wound up declining to file any charges. Cell phone network shutdown On August 11, 2011, BART officials successfully prevented another evening-commute anti-police demonstration by shutting down the public cell phone network serving their jurisdiction in and between the downtown San Francisco stations. The police had received information that the protest was to be coordinated live via internet and text messages. This was the first documented instance of any government agency in the United States shutting down public communications to disrupt a protest. The American Civil Liberties Union called the decision "in effect an effort by a governmental entity to silence its critics." Operations The BART police have various positions in their ranks. including peace officers, community service officers, dispatchers, revenue protection guards, and administrative staff. Most officers are assigned to patrol, and others are assigned to special operations teams. The department's decentralized patrol bureau is divided into five police zones. Each has its own headquarters and field office. The police department has: criminal investigation, personnel and training, record, warrant, crime analysis, traffic administration, property and evidence, and revenue protection divisions. There is also the office of the chief