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>> “My problem is evidence, That there isn’t any at all to justify shooting an unarmed person in the back...” <<
Evidence? - The evidence in the video is clear that he was resisting a lawful arrest.
She had the responsibility and authority to do that which was necessary to return the perp to the court for questioning.
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OK here’s my real problem. I severely doubt she had the authority to just pull her gun and shoot anyone who didn’t do what she says. Not even the police can do that. I don’t think it was premeditated murder, but she overstepped her authority. She should have gotten manslaughter at least.