The rush to informal sleuthing began Monday soon after the smoke clear as pictures and videos from the marathon began to circulate on the Internet. Salah Eddin Barhoum, a 17-year-old track star who was a spectator at Monday's race, had his picture posted all over the Internet and ended up on the cover of the New York Post. He told The Associated Press on Thursday that he is now afraid to leave his house.
Some of the amateur police work didn't sit well with the professionals. Boston's police department, for example, has a very active Twitter account with more than 220,000 followers, but the onslaught of misinformation proved to be too much. At one point, Boston police asked people to stop tweeting information from their scanner traffic.
Other police departments have faced similar situations. In the Seattle area, journalists and members of the public were asked to stop tweeting as authorities looked for a man who killed four police officers in 2009. In Los Angeles, authorities had the same request as they looked for rogue ex-police officer Christopher Dorner earlier this year.
"It's completely human nature, it's to be expected that people are going to take events and try to apply meaning," said Sgt. Sean Whitcomb, spokesman for Seattle's police.
The Seattle Police Department has fully embraced Twitter and blogs, using both frequently. Whitcomb said the department disseminated as much information as it could, such as pictures, on two recent cases in which there were armed suspects on the loose that sparked brief citywide manhunts.
"We also want to make sure we are having a voice in the conversation," Whitcomb said. "We want people to go to us first and cover the information we're putting out. If we can get that done, it's a win."
While Reddit and 4Chan have been around for several years, their prominence has grown of late. More and more news organizations have learned to use them to mine information. For Hosein, sub-sections on Reddit have become something like local newspapers, except it's the users providing the content.
"Citizens think they almost have an obligation to rise up to do the work," he said.
Hosein says that the FBI's call for help was no different than a "Wanted: Dead or Alive" poster from the 1800's — albeit with much more amplification and distribution. But he feels that after this week's saga, people will eventually learn to exercise caution.
"There's a sense that we're learning collectively quickly, that we actually have to take on some of the sourcing rules that journalists have had in the past," Hosein said. "I've seen more restraint like, 'Wait guys, hold on, there's gotta be more confirmation.' I know we're learning. I don't think it's going to be repeated."
Manuel Valdes can be reached at http://twitter.com/ByManuelValdes
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