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:A body camera from Taser is seen during a press conference at City Hall September 24, 2014 in Washington, DC. The Washington, DC Metropolitan Police Department is embarking on a six- month pilot program where 250 body cameras will be used by officers. AFP PHOTO/Brendan SMIALOWSKI (Photo credit should read BRENDAN SMIALOWSKI/AFP/Getty Images)
:A body camera from Taser is seen during a press conference at City Hall September 24, 2014 in Washington, DC. The Washington, DC Metropolitan Police Department is embarking on a six- month pilot program where 250 body cameras will be used by officers. AFP PHOTO/Brendan SMIALOWSKI (Photo credit should read BRENDAN SMIALOWSKI/AFP/Getty Images)

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    Senator presses for body cameras on police

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Senator presses for body cameras on police

Sen. Tim Scott, R-South Carolina, said the presence of body cameras would have made a "substantial" difference in what happened to Freddie Gray of Baltimore.

Senator presses for body cameras on police

Sen. Tim Scott, R-South Carolina, said the presence of body cameras would have made a "substantial" difference in what happened to Freddie Gray of Baltimore.