You have no idea if this is real or staged. It's You Tube, let the authorities involved deal with it. And seeing it on You Tube does not make you a witness. You can't testify against them, the plaintiff is not you. You have no sway in a court of law.
You Tube is a spectator sport. If they posted it to YT first then good luck.
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I don't know nothing, and I memorized it in school and got this here paper I'm proud of to show it.