My husband had a seizure about a year ago and he did something very similar to the people in these videos. He suddenly started turning his head the same direction a few times in a row before his body went stiff and he fell to the ground. Thankfully, he was fine afterwards but it was terrifying to see. And he is NOT vaxxed.
Not saying this is what's happening in the videos...but do we know for a fact these people all died??