Gunshot sensors touted by Chicago police as new high-tech crime fighting tool

Gunshot sensors touted by Chicago police as new high-tech crime fighting tool

Gunshot sensors touted by Chicago police as new high-tech crime fighting tool

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Gunshot sensors touted by Chicago police as new high-tech crime fighting tool

Gunshot sensors touted by Chicago police as new high-tech crime fighting tool
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Protest outside Trump’s Columbus Circle hotel day before inauguration

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