The role of Facebook Live in the reaction to the Castile shooting
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Many people are commenting on the remarkable poise of Diamond Reynolds as she captured her boyfriend's death on live video.
Reynolds said she decided to broadcast the scene live so Americans could come to their own conclusions about what happened.
This technology that allows Reynolds, and others, to share video in real time is relatively new.
The algorithms behind that technology help explain how quickly the video went viral, jump starting protests locally and across the country.
MPR's Cathy Wurzer spoke about the technology with MPR Digital Editor Michael Olson.
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