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Community members and police officials gather at the Boston Police Department headquarters to see a video, Wednesday, June 3, 2015, in Boston, of a fatal police shooting on Tuesday, in the city's Roslindale neighborhood. Police said the video shows that officers did not have their weapons drawn when they approached Usaama Rahim and that they backed up when he initially lunged at them with a knife. (David Ryan/The Boston Globe via AP, Pool)
Community members and police officials gather at the Boston Police Department headquarters to see a video, Wednesday, June 3, 2015, in Boston, of a fatal police shooting on Tuesday, in the city's Roslindale neighborhood. Police said the video shows that officers did not have their weapons drawn when they approached Usaama Rahim and that they backed up when he initially lunged at them with a knife. (David Ryan/The Boston Globe via AP, Pool)

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Showing shooting video to Boston community 'brilliant'

Transparency puts the public in a position to judge, says former Boston police commissioner Ed Davis of the shooting video .

Showing shooting video to Boston community 'brilliant'

Transparency puts the public in a position to judge, says former Boston police commissioner Ed Davis of the shooting video .