I watched the video. Clearly the van is in the wrong.
Two points though:
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Laws are different everywhere for cyclists. Everybody should know those rules in their jurisdiction, drivers and cyclists. Where I live you can take the lane but you still can be passed by vehicular traffic and you’re obligated to use a bike lane if available.
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Being in the “right” isn’t a magical shield, always ride like everyone else on the road is trying to kill you. Better to end a ride in one piece than to end up dead or injured proving you were in the right.