In this task, you are given a text of many news articles seperated by special token "|||||". Your task is to summarize them.

BART directors, slammed with criticism over the transit system's decision to shut down underground wireless service to stop a demonstration, agreed Wednesday they should limit use of that tactic to extreme situations in which public safety is endangered. 
  
 The BART Board of Directors, at a special meeting called to discuss the controversial wireless shutdown, did not vote on a policy, citing state open meeting laws. But all of the directors said they favor a policy - and most believe it should restrict when the transit agency would shut off the antennas that provide cell phone and wireless data service in BART's subways. 
  
 "I think we reached a consensus," said Bob Franklin, board president, "that it should only be used in an extreme case where the public is imminently at risk." 
  
 Directors will try to further define when it may be appropriate to turn off wireless access and will seek advice from its new police Citizen Review Board before bringing a proposal back to a public meeting in two to four weeks. 
  
 BART police touched off a free speech debate that generated international news coverage when they switched off the gadgetry Aug. 11 that enables people to use their cell phones and wireless devices in San Francisco's Market Street subway. The controversy also drew the ire of Anonymous, a secretive group promoting free speech and Internet freedom, which hacked two BART-related websites and released personal information on passengers and police officers, and staged two protests that caused police to shut downtown BART stations for hours. 
  
 Wednesday's three-hour meeting was an effort to steer the discussion away from BART's trains and commuters and into the district's boardroom. None of the 18 speakers identified themselves as Anonymous members, and just one, a man who goes by the lone name "Krystof," claimed to be a protest leader. 
  
 Uproar over photos 
  
 But as the meeting took place, some Anonymous members tweeted messages and sent out links to private, partially nude photographs purported to be of BART spokesman Linton Johnson. The group's long list of demands includes firing Johnson. 
  
 Johnson, who was attending to a family emergency, could not be reached for comment. Jim Allison, another BART spokesman, was outraged by the action, which also upset some Anonymous members. 
  
 "To do something so personal, so damaging, is beyond the pale," Allison said. 
  
 The posting of the photos changed the tone of what had been a civil day of debate over the wireless shutdown. Unlike the protests, or the BART board meetings that followed the fatal shooting of Oscar Grant, no speakers were shouted down and nothing was thrown at BART officials. 
  
 Most of the speakers objected to the transit agency's decision to shut down wireless service to prevent protesters demonstrating against BART police from coordinating their efforts. Police Chief Kenton Rainey said he ordered the blackout after learning that protesters planned to chain themselves to trains to shut down service. 
  
 Speech, safety concerns 
  
 BART installed and owns the underground wireless systems and has the right to shut it down, said district counsel Matthew Barrows. He said BART considered the free speech implications, but decided it did not violate the First Amendment if the decision was made to protect public safety. 
  
 Michael Risher, senior attorney with the American Civil Liberties Union of Northern California, said that once BART installed the wireless systems, they became "a public forum" subject to constitutional protection. Shutdowns should be permitted only in extreme circumstances such as a hostage situation or a bomb that could be detonated by a cell phone. 
  
 Many of the speakers also advised the directors to tread carefully in what may well become a precedent-setting situation. 
  
 "This is an important beachhead in the fight for free speech and against suppression," said Jacob Hoffman-Andrews , a regular BART rider from San Francisco. "Please respect our free speech rights." 
  
 This article appeared on page C - 1 of the San Francisco Chronicle ||||| There are lawful ways to protest outside the fare gates or go to BART board meetings -- that's appropriate, not making anonymous demands," Allison said. "We stand by our decision to interrupt cell-phone service. 
  
 Earlier todayreported that Anonymous, the secret hacking group responsible for BART protests, fired off a list of demands the transit agency would have to meet before the group would put an end to the weekly protests that have snarled evening commutes. And one of those demands was for BART to fire its chief spokesman Linton Johnson.To show they are serious about their ill feelings toward Johnson, members of the group released saucy photos that allegedly show the bare-chested Johnson pulling down his pants, giving a full-frontal view of his genitals . Accompanying the partially nude photos is the following message:"If you are going to be a dick to the public, then I'm sure you don't mind showing your dick to the public." Who knows where the vulgar photos originated from, but the pictures are blowing up on Twitter. Johnson became a target after the veteran spokesman told media outlets that it was his idea to shutdown cell-phone service in effort to block coordination of a scheduled protest -- and that it was well within BART's right to do so.Jim Allison, a spokesman for BART, agency said he would not discuss the photos or any other "private matter" of an employee, but he clearly condemned the release of the photos. "They are not only unethical, but illegal," said Allison. He went on to say that the protesters can keep demonstrating all they want, as long as it's done legally. " |||||
Hackers outraged by BART's decision to cut off cell phone service to foil a protest have gone below the belt. Anonymous claims it has obtained lewd photos of BART spokesman Linton Johnson, and it has circulated them online, reports SF Weekly. One picture allegedly features Johnson displaying his genitals. "If you are going to be a dick to the public, then I'm sure you don't mind showing your dick to the public," Anonymous writes. The group has demanded the resignation of Johnson, who defended the blocking of wireless signals and told the media it was his idea. "It's an unfortunate personal attack," BART's board president says "Why shoot the messenger? Linton has done a good job of communicating BART's position, but he doesn't make policy." And speaking of policy, BART directors last night agreed that the wireless shutdown tactic "should only be used in an extreme case where the public is imminently at risk," reports the Chronicle. They didn't actually vote on a policy at the special meeting, but will present a proposal within the next four weeks.