Fourth, everyone has recently heard some strange rumors about the people around them, and it seems there is always some evidence to support them;
Taking into account all four points, it can be confirmed that this is not a sudden mass incident, but a carefully planned instigation of a riot. The perpetrators spread intelligence and used psychological suggestion to destroy people's trust and connections. When that flash of light appeared, the ones who had been thoroughly brainwashed rose up in violence, and the already somewhat paranoid population immediately fell into a state of panic, beginning to fight and suspect each other. Without any accidents, Tars Village would become a village of death in just one night.
I have a rough understanding of the method, but the underlying principles remain to be analyzed. Aside from arranging for the survivors' shelter, treatment, and evacuation, the most important thing now is—
"What exactly do they want to do?"